PgDatabaseMetaData (PostgreSQL JDBC Driver

java.lang.Object
- org.postgresql.jdbc.PgDatabaseMetaData

All Implemented Interfaces:: DatabaseMetaData, Wrapper

public class PgDatabaseMetaData
extends Object
implements DatabaseMetaData

Field Summary

Fields
Modifier and Type Field and Description

protected PgConnection connection
- Fields inherited from interface java.sql.DatabaseMetaData
  attributeNoNulls, attributeNullable, attributeNullableUnknown, bestRowNotPseudo, bestRowPseudo, bestRowSession, bestRowTemporary, bestRowTransaction, bestRowUnknown, columnNoNulls, columnNullable, columnNullableUnknown, functionColumnIn, functionColumnInOut, functionColumnOut, functionColumnResult, functionColumnUnknown, functionNoNulls, functionNoTable, functionNullable, functionNullableUnknown, functionResultUnknown, functionReturn, functionReturnsTable, importedKeyCascade, importedKeyInitiallyDeferred, importedKeyInitiallyImmediate, importedKeyNoAction, importedKeyNotDeferrable, importedKeyRestrict, importedKeySetDefault, importedKeySetNull, procedureColumnIn, procedureColumnInOut, procedureColumnOut, procedureColumnResult, procedureColumnReturn, procedureColumnUnknown, procedureNoNulls, procedureNoResult, procedureNullable, procedureNullableUnknown, procedureResultUnknown, procedureReturnsResult, sqlStateSQL, sqlStateSQL99, sqlStateXOpen, tableIndexClustered, tableIndexHashed, tableIndexOther, tableIndexStatistic, typeNoNulls, typeNullable, typeNullableUnknown, typePredBasic, typePredChar, typePredNone, typeSearchable, versionColumnNotPseudo, versionColumnPseudo, versionColumnUnknown

Fields
Modifier and Type	Field and Description
`protected PgConnection`	`connection`

Constructor Summary

Constructors
Constructor and Description

PgDatabaseMetaData(PgConnection conn)

Constructors
Constructor and Description
`PgDatabaseMetaData(PgConnection conn)`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`allProceduresAreCallable()` Retrieves whether the current user can call all the procedures returned by the method `getProcedures`.
`boolean`	`allTablesAreSelectable()` Retrieves whether the current user can use all the tables returned by the method `getTables` in a `SELECT` statement.
`boolean`	`autoCommitFailureClosesAllResultSets()` Retrieves whether a `SQLException` while autoCommit is `true` inidcates that all open ResultSets are closed, even ones that are holdable.
`protected Statement`	`createMetaDataStatement()`
`boolean`	`dataDefinitionCausesTransactionCommit()` Does a data definition statement within a transaction force the transaction to commit?
`boolean`	`dataDefinitionIgnoredInTransactions()` Retrieves whether this database ignores a data definition statement within a transaction.
`boolean`	`deletesAreDetected(int i)` Retrieves whether or not a visible row delete can be detected by calling the method `ResultSet.rowDeleted`.
`boolean`	`doesMaxRowSizeIncludeBlobs()` Retrieves whether the return value for the method `getMaxRowSize` includes the SQL data types `LONGVARCHAR` and `LONGVARBINARY`.
`protected String`	`escapeQuotes(String s)` Turn the provided value into a valid string literal for direct inclusion into a query.
`boolean`	`generatedKeyAlwaysReturned()` Retrieves whether a generated key will always be returned if the column name(s) or index(es) specified for the auto generated key column(s) are valid and the statement succeeds.
`ResultSet`	`getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern)` Retrieves a description of the given attribute of the given type for a user-defined type (UDT) that is available in the given schema and catalog.
`ResultSet`	`getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable)` Retrieves a description of a table's optimal set of columns that uniquely identifies a row.
`ResultSet`	`getCatalogs()` PostgreSQL does not support multiple catalogs from a single connection, so to reduce confusion we only return the current catalog.
`String`	`getCatalogSeparator()` Retrieves the `String` that this database uses as the separator between a catalog and table name.
`String`	`getCatalogTerm()` Retrieves the database vendor's preferred term for "catalog".
`ResultSet`	`getClientInfoProperties()` Retrieves a list of the client info properties that the driver supports.
`ResultSet`	`getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern)` Retrieves a description of the access rights for a table's columns.
`ResultSet`	`getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)` Retrieves a description of table columns available in the specified catalog.
`Connection`	`getConnection()` Retrieves the connection that produced this metadata object.
`ResultSet`	`getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable)` Retrieves a description of the foreign key columns in the given foreign key table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table).
`int`	`getDatabaseMajorVersion()` Retrieves the major version number of the underlying database.
`int`	`getDatabaseMinorVersion()` Retrieves the minor version number of the underlying database.
`String`	`getDatabaseProductName()` Retrieves the name of this database product.
`String`	`getDatabaseProductVersion()` Retrieves the version number of this database product.
`int`	`getDefaultTransactionIsolation()` Retrieves this database's default transaction isolation level.
`int`	`getDriverMajorVersion()` Retrieves this JDBC driver's major version number.
`int`	`getDriverMinorVersion()` Retrieves this JDBC driver's minor version number.
`String`	`getDriverName()` Retrieves the name of this JDBC driver.
`String`	`getDriverVersion()` Retrieves the version number of this JDBC driver as a `String`.
`ResultSet`	`getExportedKeys(String catalog, String schema, String table)` Retrieves a description of the foreign key columns that reference the given table's primary key columns (the foreign keys exported by a table).
`String`	`getExtraNameCharacters()` Retrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
`ResultSet`	`getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern)` Retrieves a description of the given catalog's system or user function parameters and return type.
`ResultSet`	`getFunctions(String catalog, String schemaPattern, String functionNamePattern)` Retrieves a description of the system and user functions available in the given catalog.
`String`	`getIdentifierQuoteString()` What is the string used to quote SQL identifiers?
`protected ResultSet`	`getImportedExportedKeys(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable)`
`ResultSet`	`getImportedKeys(String catalog, String schema, String table)` Retrieves a description of the primary key columns that are referenced by the given table's foreign key columns (the primary keys imported by a table).
`ResultSet`	`getIndexInfo(String catalog, String schema, String tableName, boolean unique, boolean approximate)` Retrieves a description of the given table's indices and statistics.
`int`	`getJDBCMajorVersion()` Retrieves the major JDBC version number for this driver.
`int`	`getJDBCMinorVersion()` Retrieves the minor JDBC version number for this driver.
`int`	`getMaxBinaryLiteralLength()` Retrieves the maximum number of hex characters this database allows in an inline binary literal.
`int`	`getMaxCatalogNameLength()` Retrieves the maximum number of characters that this database allows in a catalog name.
`int`	`getMaxCharLiteralLength()` Retrieves the maximum number of characters this database allows for a character literal.
`int`	`getMaxColumnNameLength()` Retrieves the maximum number of characters this database allows for a column name.
`int`	`getMaxColumnsInGroupBy()` Retrieves the maximum number of columns this database allows in a `GROUP BY` clause.
`int`	`getMaxColumnsInIndex()` Retrieves the maximum number of columns this database allows in an index.
`int`	`getMaxColumnsInOrderBy()` Retrieves the maximum number of columns this database allows in an `ORDER BY` clause.
`int`	`getMaxColumnsInSelect()` Retrieves the maximum number of columns this database allows in a `SELECT` list.
`int`	`getMaxColumnsInTable()` Retrieves the maximum number of columns this database allows in a table.
`int`	`getMaxConnections()` Retrieves the maximum number of concurrent connections to this database that are possible.
`int`	`getMaxCursorNameLength()` Retrieves the maximum number of characters that this database allows in a cursor name.
`protected int`	`getMaxIndexKeys()`
`int`	`getMaxIndexLength()` Retrieves the maximum number of bytes this database allows for an index, including all of the parts of the index.
`long`	`getMaxLogicalLobSize()`
`protected int`	`getMaxNameLength()`
`int`	`getMaxProcedureNameLength()` Retrieves the maximum number of characters that this database allows in a procedure name.
`int`	`getMaxRowSize()` Retrieves the maximum number of bytes this database allows in a single row.
`int`	`getMaxSchemaNameLength()` Retrieves the maximum number of characters that this database allows in a schema name.
`int`	`getMaxStatementLength()` Retrieves the maximum number of characters this database allows in an SQL statement.
`int`	`getMaxStatements()` Retrieves the maximum number of active statements to this database that can be open at the same time.
`int`	`getMaxTableNameLength()` Retrieves the maximum number of characters this database allows in a table name.
`int`	`getMaxTablesInSelect()` Retrieves the maximum number of tables this database allows in a `SELECT` statement.
`int`	`getMaxUserNameLength()` Retrieves the maximum number of characters this database allows in a user name.
`String`	`getNumericFunctions()` Retrieves a comma-separated list of math functions available with this database.
`ResultSet`	`getPrimaryKeys(String catalog, String schema, String table)` Retrieves a description of the given table's primary key columns.
`ResultSet`	`getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern)` Retrieves a description of the given catalog's stored procedure parameter and result columns.
`ResultSet`	`getProcedures(String catalog, String schemaPattern, String procedureNamePattern)` Retrieves a description of the stored procedures available in the given catalog.
`String`	`getProcedureTerm()` Retrieves the database vendor's preferred term for "procedure".
`ResultSet`	`getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)` Retrieves a description of the pseudo or hidden columns available in a given table within the specified catalog and schema.
`int`	`getResultSetHoldability()` Retrieves this database's default holdability for `ResultSet` objects.
`RowIdLifetime`	`getRowIdLifetime()` Indicates whether or not this data source supports the SQL `ROWID` type, and if so the lifetime for which a `RowId` object remains valid.
`ResultSet`	`getSchemas()` Retrieves the schema names available in this database.
`ResultSet`	`getSchemas(String catalog, String schemaPattern)` Retrieves the schema names available in this database.
`String`	`getSchemaTerm()` Retrieves the database vendor's preferred term for "schema".
`String`	`getSearchStringEscape()` Retrieves the string that can be used to escape wildcard characters.
`String`	`getSQLKeywords()` Retrieves a comma-separated list of all of this database's SQL keywords that are NOT also SQL:2003 keywords.
`int`	`getSQLStateType()` Indicates whether the SQLSTATE returned by `SQLException.getSQLState` is X/Open (now known as Open Group) SQL CLI or SQL:2003.
`String`	`getStringFunctions()` Retrieves a comma-separated list of string functions available with this database.
`ResultSet`	`getSuperTables(String catalog, String schemaPattern, String tableNamePattern)` Retrieves a description of the table hierarchies defined in a particular schema in this database.
`ResultSet`	`getSuperTypes(String catalog, String schemaPattern, String typeNamePattern)` Retrieves a description of the user-defined type (UDT) hierarchies defined in a particular schema in this database.
`String`	`getSystemFunctions()` Retrieves a comma-separated list of system functions available with this database.
`ResultSet`	`getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern)` Retrieves a description of the access rights for each table available in a catalog.
`ResultSet`	`getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types)` Retrieves a description of the tables available in the given catalog.
`ResultSet`	`getTableTypes()` Retrieves the table types available in this database.
`String`	`getTimeDateFunctions()` Retrieves a comma-separated list of the time and date functions available with this database.
`ResultSet`	`getTypeInfo()` Retrieves a description of all the data types supported by this database.
`ResultSet`	`getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types)` Retrieves a description of the user-defined types (UDTs) defined in a particular schema.
`String`	`getURL()` Retrieves the URL for this DBMS.
`String`	`getUserName()` Retrieves the user name as known to this database.
`ResultSet`	`getVersionColumns(String catalog, String schema, String table)` Retrieves a description of a table's columns that are automatically updated when any value in a row is updated.
`boolean`	`insertsAreDetected(int type)` Retrieves whether or not a visible row insert can be detected by calling the method `ResultSet.rowInserted`.
`boolean`	`isCatalogAtStart()` Retrieves whether a catalog appears at the start of a fully qualified table name.
`boolean`	`isReadOnly()` Retrieves whether this database is in read-only mode.
`boolean`	`isWrapperFor(Class<?> iface)` Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
`boolean`	`locatorsUpdateCopy()` Indicates whether updates made to a LOB are made on a copy or directly to the LOB.
`boolean`	`nullPlusNonNullIsNull()` Retrieves whether this database supports concatenations between `NULL` and non-`NULL` values being `NULL`.
`boolean`	`nullsAreSortedAtEnd()` Retrieves whether `NULL` values are sorted at the end regardless of sort order.
`boolean`	`nullsAreSortedAtStart()` Retrieves whether `NULL` values are sorted at the start regardless of sort order.
`boolean`	`nullsAreSortedHigh()` Retrieves whether `NULL` values are sorted high.
`boolean`	`nullsAreSortedLow()` Retrieves whether `NULL` values are sorted low.
`boolean`	`othersDeletesAreVisible(int i)` Retrieves whether deletes made by others are visible.
`boolean`	`othersInsertsAreVisible(int type)` Retrieves whether inserts made by others are visible.
`boolean`	`othersUpdatesAreVisible(int type)` Retrieves whether updates made by others are visible.
`boolean`	`ownDeletesAreVisible(int type)` Retrieves whether a result set's own deletes are visible.
`boolean`	`ownInsertsAreVisible(int type)` Retrieves whether a result set's own inserts are visible.
`boolean`	`ownUpdatesAreVisible(int type)` Retrieves whether for the given type of `ResultSet` object, the result set's own updates are visible.
`Map<String,Map<String,List<String[]>>>`	`parseACL(String aclArray, String owner)` Take the a String representing an array of ACLs and return a Map mapping the SQL permission name to a List of usernames who have that permission.
`boolean`	`storesLowerCaseIdentifiers()` Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in lower case.
`boolean`	`storesLowerCaseQuotedIdentifiers()` Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in lower case.
`boolean`	`storesMixedCaseIdentifiers()` Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in mixed case.
`boolean`	`storesMixedCaseQuotedIdentifiers()` Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in mixed case.
`boolean`	`storesUpperCaseIdentifiers()` Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in upper case.
`boolean`	`storesUpperCaseQuotedIdentifiers()` Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in upper case.
`boolean`	`supportsAlterTableWithAddColumn()` Retrieves whether this database supports `ALTER TABLE` with add column.
`boolean`	`supportsAlterTableWithDropColumn()` Retrieves whether this database supports `ALTER TABLE` with drop column.
`boolean`	`supportsANSI92EntryLevelSQL()` Does this driver support the ANSI-92 entry level SQL grammar?
`boolean`	`supportsANSI92FullSQL()` Retrieves whether this database supports the ANSI92 full SQL grammar supported.
`boolean`	`supportsANSI92IntermediateSQL()` Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.
`boolean`	`supportsBatchUpdates()` Retrieves whether this database supports batch updates.
`boolean`	`supportsCatalogsInDataManipulation()` Retrieves whether a catalog name can be used in a data manipulation statement.
`boolean`	`supportsCatalogsInIndexDefinitions()` Retrieves whether a catalog name can be used in an index definition statement.
`boolean`	`supportsCatalogsInPrivilegeDefinitions()` Retrieves whether a catalog name can be used in a privilege definition statement.
`boolean`	`supportsCatalogsInProcedureCalls()` Retrieves whether a catalog name can be used in a procedure call statement.
`boolean`	`supportsCatalogsInTableDefinitions()` Retrieves whether a catalog name can be used in a table definition statement.
`boolean`	`supportsColumnAliasing()` Retrieves whether this database supports column aliasing.
`boolean`	`supportsConvert()` Retrieves whether this database supports the JDBC scalar function `CONVERT` for the conversion of one JDBC type to another.
`boolean`	`supportsConvert(int fromType, int toType)` Retrieves whether this database supports the JDBC scalar function `CONVERT` for conversions between the JDBC types fromType and toType.
`boolean`	`supportsCoreSQLGrammar()` Does this driver support the Core ODBC SQL grammar.
`boolean`	`supportsCorrelatedSubqueries()` Retrieves whether this database supports correlated subqueries.
`boolean`	`supportsDataDefinitionAndDataManipulationTransactions()` Retrieves whether this database supports both data definition and data manipulation statements within a transaction.
`boolean`	`supportsDataManipulationTransactionsOnly()` Retrieves whether this database supports only data manipulation statements within a transaction.
`boolean`	`supportsDifferentTableCorrelationNames()` Retrieves whether, when table correlation names are supported, they are restricted to being different from the names of the tables.
`boolean`	`supportsExpressionsInOrderBy()` Retrieves whether this database supports expressions in `ORDER BY` lists.
`boolean`	`supportsExtendedSQLGrammar()` Does this driver support the Extended (Level 2) ODBC SQL grammar.
`boolean`	`supportsFullOuterJoins()` Retrieves whether this database supports full nested outer joins.
`boolean`	`supportsGetGeneratedKeys()` Retrieves whether auto-generated keys can be retrieved after a statement has been executed
`boolean`	`supportsGroupBy()` Retrieves whether this database supports some form of `GROUP BY` clause.
`boolean`	`supportsGroupByBeyondSelect()` Retrieves whether this database supports using columns not included in the `SELECT` statement in a `GROUP BY` clause provided that all of the columns in the `SELECT` statement are included in the `GROUP BY` clause.
`boolean`	`supportsGroupByUnrelated()` Retrieves whether this database supports using a column that is not in the `SELECT` statement in a `GROUP BY` clause.
`boolean`	`supportsIntegrityEnhancementFacility()` Retrieves whether this database supports the SQL Integrity Enhancement Facility.
`boolean`	`supportsLikeEscapeClause()` Retrieves whether this database supports specifying a `LIKE` escape clause.
`boolean`	`supportsLimitedOuterJoins()` Retrieves whether this database provides limited support for outer joins.
`boolean`	`supportsMinimumSQLGrammar()` Retrieves whether this database supports the ODBC Minimum SQL grammar.
`boolean`	`supportsMixedCaseIdentifiers()` Does the database treat mixed case unquoted SQL identifiers as case sensitive and as a result store them in mixed case?
`boolean`	`supportsMixedCaseQuotedIdentifiers()` Does the database treat mixed case quoted SQL identifiers as case sensitive and as a result store them in mixed case?
`boolean`	`supportsMultipleOpenResults()` Retrieves whether it is possible to have multiple `ResultSet` objects returned from a `CallableStatement` object simultaneously.
`boolean`	`supportsMultipleResultSets()` Retrieves whether this database supports getting multiple `ResultSet` objects from a single call to the method `execute`.
`boolean`	`supportsMultipleTransactions()` Retrieves whether this database allows having multiple transactions open at once (on different connections).
`boolean`	`supportsNamedParameters()` Retrieves whether this database supports named parameters to callable statements.
`boolean`	`supportsNonNullableColumns()` Retrieves whether columns in this database may be defined as non-nullable.
`boolean`	`supportsOpenCursorsAcrossCommit()` Retrieves whether this database supports keeping cursors open across commits.
`boolean`	`supportsOpenCursorsAcrossRollback()` Retrieves whether this database supports keeping cursors open across rollbacks.
`boolean`	`supportsOpenStatementsAcrossCommit()` Retrieves whether this database supports keeping statements open across commits.
`boolean`	`supportsOpenStatementsAcrossRollback()` Retrieves whether this database supports keeping statements open across rollbacks.
`boolean`	`supportsOrderByUnrelated()` Retrieves whether this database supports using a column that is not in the `SELECT` statement in an `ORDER BY` clause.
`boolean`	`supportsOuterJoins()` Retrieves whether this database supports some form of outer join.
`boolean`	`supportsPositionedDelete()` We support cursors for gets only it seems.
`boolean`	`supportsPositionedUpdate()` Retrieves whether this database supports positioned `UPDATE` statements.
`boolean`	`supportsRefCursors()`
`boolean`	`supportsResultSetConcurrency(int type, int concurrency)` Retrieves whether this database supports the given concurrency type in combination with the given result set type.
`boolean`	`supportsResultSetHoldability(int holdability)` Retrieves whether this database supports the given result set holdability.
`boolean`	`supportsResultSetType(int type)` Retrieves whether this database supports the given result set type.
`boolean`	`supportsSavepoints()` Retrieves whether this database supports savepoints.
`boolean`	`supportsSchemasInDataManipulation()` Retrieves whether a schema name can be used in a data manipulation statement.
`boolean`	`supportsSchemasInIndexDefinitions()` Retrieves whether a schema name can be used in an index definition statement.
`boolean`	`supportsSchemasInPrivilegeDefinitions()` Retrieves whether a schema name can be used in a privilege definition statement.
`boolean`	`supportsSchemasInProcedureCalls()` Retrieves whether a schema name can be used in a procedure call statement.
`boolean`	`supportsSchemasInTableDefinitions()` Retrieves whether a schema name can be used in a table definition statement.
`boolean`	`supportsSelectForUpdate()` Retrieves whether this database supports `SELECT FOR UPDATE` statements.
`boolean`	`supportsStatementPooling()` Retrieves whether this database supports statement pooling.
`boolean`	`supportsStoredFunctionsUsingCallSyntax()` Retrieves whether this database supports invoking user-defined or vendor functions using the stored procedure escape syntax.
`boolean`	`supportsStoredProcedures()` Retrieves whether this database supports stored procedure calls that use the stored procedure escape syntax.
`boolean`	`supportsSubqueriesInComparisons()` Retrieves whether this database supports subqueries in comparison expressions.
`boolean`	`supportsSubqueriesInExists()` Retrieves whether this database supports subqueries in `EXISTS` expressions.
`boolean`	`supportsSubqueriesInIns()` Retrieves whether this database supports subqueries in `IN` expressions.
`boolean`	`supportsSubqueriesInQuantifieds()` Retrieves whether this database supports subqueries in quantified expressions.
`boolean`	`supportsTableCorrelationNames()` Retrieves whether this database supports table correlation names.
`boolean`	`supportsTransactionIsolationLevel(int level)` Retrieves whether this database supports the given transaction isolation level.
`boolean`	`supportsTransactions()` Retrieves whether this database supports transactions.
`boolean`	`supportsUnion()` Retrieves whether this database supports SQL `UNION`.
`boolean`	`supportsUnionAll()` Retrieves whether this database supports SQL `UNION ALL`.
`<T> T`	`unwrap(Class<T> iface)` Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.
`boolean`	`updatesAreDetected(int type)` Retrieves whether or not a visible row update can be detected by calling the method `ResultSet.rowUpdated`.
`boolean`	`usesLocalFilePerTable()` Does the database use a file for each table?
`boolean`	`usesLocalFiles()` Does the database store tables in a local file?

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - connection
```
protected final PgConnection connection
```
- Constructor Detail
  - PgDatabaseMetaData
```
public PgDatabaseMetaData(PgConnection conn)
```
- Method Detail
  - getMaxIndexKeys
```
protected int getMaxIndexKeys()
                       throws SQLException
```
    Throws:
    
    SQLException
  - getMaxNameLength
```
protected int getMaxNameLength()
                        throws SQLException
```
    Throws:
    
    SQLException
  - allProceduresAreCallable
```
public boolean allProceduresAreCallable()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether the current user can call all the procedures returned by the method getProcedures.
    
    Specified by:
    
    allProceduresAreCallable in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - allTablesAreSelectable
```
public boolean allTablesAreSelectable()
                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether the current user can use all the tables returned by the method getTables in a SELECT statement.
    
    Specified by:
    
    allTablesAreSelectable in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getURL
```
public String getURL()
              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the URL for this DBMS.
    
    Specified by:
    
    getURL in interface DatabaseMetaData
    
    Returns:
    the URL for this DBMS or null if it cannot be generated
    
    Throws:
    
    SQLException - if a database access error occurs
  - getUserName
```
public String getUserName()
                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the user name as known to this database.
    
    Specified by:
    
    getUserName in interface DatabaseMetaData
    
    Returns:
    the database user name
    
    Throws:
    
    SQLException - if a database access error occurs
  - isReadOnly
```
public boolean isReadOnly()
                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database is in read-only mode.
    
    Specified by:
    
    isReadOnly in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - nullsAreSortedHigh
```
public boolean nullsAreSortedHigh()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether NULL values are sorted high. Sorted high means that NULL values sort higher than any other value in a domain. In an ascending order, if this method returns true, NULL values will appear at the end. By contrast, the method nullsAreSortedAtEnd indicates whether NULL values are sorted at the end regardless of sort order.
    
    Specified by:
    
    nullsAreSortedHigh in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - nullsAreSortedLow
```
public boolean nullsAreSortedLow()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether NULL values are sorted low. Sorted low means that NULL values sort lower than any other value in a domain. In an ascending order, if this method returns true, NULL values will appear at the beginning. By contrast, the method nullsAreSortedAtStart indicates whether NULL values are sorted at the beginning regardless of sort order.
    
    Specified by:
    
    nullsAreSortedLow in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - nullsAreSortedAtStart
```
public boolean nullsAreSortedAtStart()
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether NULL values are sorted at the start regardless of sort order.
    
    Specified by:
    
    nullsAreSortedAtStart in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - nullsAreSortedAtEnd
```
public boolean nullsAreSortedAtEnd()
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether NULL values are sorted at the end regardless of sort order.
    
    Specified by:
    
    nullsAreSortedAtEnd in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getDatabaseProductName
```
public String getDatabaseProductName()
                              throws SQLException
```
    Retrieves the name of this database product. We hope that it is PostgreSQL, so we return that explicitly.
    
    Specified by:
    
    getDatabaseProductName in interface DatabaseMetaData
    
    Returns:
    "PostgreSQL"
    
    Throws:
    
    SQLException - if a database access error occurs
  - getDatabaseProductVersion
```
public String getDatabaseProductVersion()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the version number of this database product.
    
    Specified by:
    
    getDatabaseProductVersion in interface DatabaseMetaData
    
    Returns:
    database version number
    
    Throws:
    
    SQLException - if a database access error occurs
  - getDriverName
```
public String getDriverName()
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the name of this JDBC driver.
    
    Specified by:
    
    getDriverName in interface DatabaseMetaData
    
    Returns:
    JDBC driver name
  - getDriverVersion
```
public String getDriverVersion()
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the version number of this JDBC driver as a String.
    
    Specified by:
    
    getDriverVersion in interface DatabaseMetaData
    
    Returns:
    JDBC driver version
  - getDriverMajorVersion
```
public int getDriverMajorVersion()
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves this JDBC driver's major version number.
    
    Specified by:
    
    getDriverMajorVersion in interface DatabaseMetaData
    
    Returns:
    JDBC driver major version
  - getDriverMinorVersion
```
public int getDriverMinorVersion()
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves this JDBC driver's minor version number.
    
    Specified by:
    
    getDriverMinorVersion in interface DatabaseMetaData
    
    Returns:
    JDBC driver minor version number
  - usesLocalFiles
```
public boolean usesLocalFiles()
                       throws SQLException
```
    Does the database store tables in a local file? No - it stores them in a file on the server.
    
    Specified by:
    
    usesLocalFiles in interface DatabaseMetaData
    
    Returns:
    true if so
    
    Throws:
    
    SQLException - if a database access error occurs
  - usesLocalFilePerTable
```
public boolean usesLocalFilePerTable()
                              throws SQLException
```
    Does the database use a file for each table? Well, not really, since it doesn't use local files.
    
    Specified by:
    
    usesLocalFilePerTable in interface DatabaseMetaData
    
    Returns:
    true if so
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMixedCaseIdentifiers
```
public boolean supportsMixedCaseIdentifiers()
                                     throws SQLException
```
    Does the database treat mixed case unquoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC-Compliant driver will always return false.
    
    Specified by:
    
    supportsMixedCaseIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesUpperCaseIdentifiers
```
public boolean storesUpperCaseIdentifiers()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in upper case.
    
    Specified by:
    
    storesUpperCaseIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesLowerCaseIdentifiers
```
public boolean storesLowerCaseIdentifiers()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in lower case.
    
    Specified by:
    
    storesLowerCaseIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesMixedCaseIdentifiers
```
public boolean storesMixedCaseIdentifiers()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in mixed case.
    
    Specified by:
    
    storesMixedCaseIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMixedCaseQuotedIdentifiers
```
public boolean supportsMixedCaseQuotedIdentifiers()
                                           throws SQLException
```
    Does the database treat mixed case quoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC compliant driver will always return true.
    
    Specified by:
    
    supportsMixedCaseQuotedIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesUpperCaseQuotedIdentifiers
```
public boolean storesUpperCaseQuotedIdentifiers()
                                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in upper case.
    
    Specified by:
    
    storesUpperCaseQuotedIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesLowerCaseQuotedIdentifiers
```
public boolean storesLowerCaseQuotedIdentifiers()
                                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in lower case.
    
    Specified by:
    
    storesLowerCaseQuotedIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - storesMixedCaseQuotedIdentifiers
```
public boolean storesMixedCaseQuotedIdentifiers()
                                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in mixed case.
    
    Specified by:
    
    storesMixedCaseQuotedIdentifiers in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getIdentifierQuoteString
```
public String getIdentifierQuoteString()
                                throws SQLException
```
    What is the string used to quote SQL identifiers? This returns a space if identifier quoting isn't supported. A JDBC Compliant driver will always use a double quote character.
    
    Specified by:
    
    getIdentifierQuoteString in interface DatabaseMetaData
    
    Returns:
    the quoting string
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSQLKeywords
```
public String getSQLKeywords()
                      throws SQLException
```
    Retrieves a comma-separated list of all of this database's SQL keywords that are NOT also SQL:2003 keywords.
    Within PostgreSQL, the keywords are found in src/backend/parser/keywords.c
    For SQL Keywords, I took the list provided at http://web.dementia.org/~ shadow/sql/sql3bnf.sep93.txt which is for SQL3, not SQL-92, but it is close enough for this purpose.
    
    Specified by:
    
    getSQLKeywords in interface DatabaseMetaData
    
    Returns:
    a comma separated list of keywords we use
    
    Throws:
    
    SQLException - if a database access error occurs
  - getNumericFunctions
```
public String getNumericFunctions()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves a comma-separated list of math functions available with this database. These are the Open /Open CLI math function names used in the JDBC function escape clause.
    
    Specified by:
    
    getNumericFunctions in interface DatabaseMetaData
    
    Returns:
    the list of math functions supported by this database
    
    Throws:
    
    SQLException - if a database access error occurs
  - getStringFunctions
```
public String getStringFunctions()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves a comma-separated list of string functions available with this database. These are the Open Group CLI string function names used in the JDBC function escape clause.
    
    Specified by:
    
    getStringFunctions in interface DatabaseMetaData
    
    Returns:
    the list of string functions supported by this database
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSystemFunctions
```
public String getSystemFunctions()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves a comma-separated list of system functions available with this database. These are the Open Group CLI system function names used in the JDBC function escape clause.
    
    Specified by:
    
    getSystemFunctions in interface DatabaseMetaData
    
    Returns:
    a list of system functions supported by this database
    
    Throws:
    
    SQLException - if a database access error occurs
  - getTimeDateFunctions
```
public String getTimeDateFunctions()
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves a comma-separated list of the time and date functions available with this database.
    
    Specified by:
    
    getTimeDateFunctions in interface DatabaseMetaData
    
    Returns:
    the list of time and date functions supported by this database
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSearchStringEscape
```
public String getSearchStringEscape()
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the string that can be used to escape wildcard characters. This is the string that can be used to escape '_' or '%' in the catalog search parameters that are a pattern (and therefore use one of the wildcard characters).
    The '_' character represents any single character; the '%' character represents any sequence of zero or more characters.
    
    Specified by:
    
    getSearchStringEscape in interface DatabaseMetaData
    
    Returns:
    the string used to escape wildcard characters
    
    Throws:
    
    SQLException - if a database access error occurs
  - getExtraNameCharacters
```
public String getExtraNameCharacters()
                              throws SQLException
```
    Retrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
    Postgresql allows any high-bit character to be used in an unquoted identifier, so we can't possibly list them all. From the file src/backend/parser/scan.l, an identifier is ident_start [A-Za-z\200-\377_] ident_cont [A-Za-z\200-\377_0-9\$] identifier {ident_start}{ident_cont}*
    
    Specified by:
    
    getExtraNameCharacters in interface DatabaseMetaData
    
    Returns:
    a string containing the extra characters
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsAlterTableWithAddColumn
```
public boolean supportsAlterTableWithAddColumn()
                                        throws SQLException
```
    Retrieves whether this database supports ALTER TABLE with add column.
    
    Specified by:
    
    supportsAlterTableWithAddColumn in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 6.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsAlterTableWithDropColumn
```
public boolean supportsAlterTableWithDropColumn()
                                         throws SQLException
```
    Retrieves whether this database supports ALTER TABLE with drop column.
    
    Specified by:
    
    supportsAlterTableWithDropColumn in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsColumnAliasing
```
public boolean supportsColumnAliasing()
                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports column aliasing.
    If so, the SQL AS clause can be used to provide names for computed columns or to provide alias names for columns as required.
    
    Specified by:
    
    supportsColumnAliasing in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - nullPlusNonNullIsNull
```
public boolean nullPlusNonNullIsNull()
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports concatenations between NULL and non-NULL values being NULL.
    
    Specified by:
    
    nullPlusNonNullIsNull in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsConvert
```
public boolean supportsConvert()
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the JDBC scalar function CONVERT for the conversion of one JDBC type to another. The JDBC types are the generic SQL data types defined in java.sql.Types.
    
    Specified by:
    
    supportsConvert in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsConvert
```
public boolean supportsConvert(int fromType,
                      int toType)
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the JDBC scalar function CONVERT for conversions between the JDBC types fromType and toType. The JDBC types are the generic SQL data types defined in java.sql.Types.
    
    Specified by:
    
    supportsConvert in interface DatabaseMetaData
    
    Parameters:
    fromType - the type to convert from; one of the type codes from the class java.sql.Types
    toType - the type to convert to; one of the type codes from the class java.sql.Types
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    Types
  - supportsTableCorrelationNames
```
public boolean supportsTableCorrelationNames()
                                      throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports table correlation names.
    
    Specified by:
    
    supportsTableCorrelationNames in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsDifferentTableCorrelationNames
```
public boolean supportsDifferentTableCorrelationNames()
                                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether, when table correlation names are supported, they are restricted to being different from the names of the tables.
    
    Specified by:
    
    supportsDifferentTableCorrelationNames in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsExpressionsInOrderBy
```
public boolean supportsExpressionsInOrderBy()
                                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports expressions in ORDER BY lists.
    
    Specified by:
    
    supportsExpressionsInOrderBy in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOrderByUnrelated
```
public boolean supportsOrderByUnrelated()
                                 throws SQLException
```
    Retrieves whether this database supports using a column that is not in the SELECT statement in an ORDER BY clause.
    
    Specified by:
    
    supportsOrderByUnrelated in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 6.4+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsGroupBy
```
public boolean supportsGroupBy()
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports some form of GROUP BY clause.
    
    Specified by:
    
    supportsGroupBy in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsGroupByUnrelated
```
public boolean supportsGroupByUnrelated()
                                 throws SQLException
```
    Retrieves whether this database supports using a column that is not in the SELECT statement in a GROUP BY clause.
    
    Specified by:
    
    supportsGroupByUnrelated in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 6.4+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsGroupByBeyondSelect
```
public boolean supportsGroupByBeyondSelect()
                                    throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports using columns not included in the SELECT statement in a GROUP BY clause provided that all of the columns in the SELECT statement are included in the GROUP BY clause.
    
    Specified by:
    
    supportsGroupByBeyondSelect in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsLikeEscapeClause
```
public boolean supportsLikeEscapeClause()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports specifying a LIKE escape clause.
    
    Specified by:
    
    supportsLikeEscapeClause in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMultipleResultSets
```
public boolean supportsMultipleResultSets()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports getting multiple ResultSet objects from a single call to the method execute.
    
    Specified by:
    
    supportsMultipleResultSets in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMultipleTransactions
```
public boolean supportsMultipleTransactions()
                                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database allows having multiple transactions open at once (on different connections).
    
    Specified by:
    
    supportsMultipleTransactions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsNonNullableColumns
```
public boolean supportsNonNullableColumns()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether columns in this database may be defined as non-nullable.
    
    Specified by:
    
    supportsNonNullableColumns in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMinimumSQLGrammar
```
public boolean supportsMinimumSQLGrammar()
                                  throws SQLException
```
    Retrieves whether this database supports the ODBC Minimum SQL grammar. This grammar is defined at:
    http://www. microsoft.com/msdn/sdk/platforms/doc/odbc/src/intropr.htm
    In Appendix C. From this description, we seem to support the ODBC minimal (Level 0) grammar.
    
    Specified by:
    
    supportsMinimumSQLGrammar in interface DatabaseMetaData
    
    Returns:
    true
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCoreSQLGrammar
```
public boolean supportsCoreSQLGrammar()
                               throws SQLException
```
    Does this driver support the Core ODBC SQL grammar. We need SQL-92 conformance for this.
    
    Specified by:
    
    supportsCoreSQLGrammar in interface DatabaseMetaData
    
    Returns:
    false
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsExtendedSQLGrammar
```
public boolean supportsExtendedSQLGrammar()
                                   throws SQLException
```
    Does this driver support the Extended (Level 2) ODBC SQL grammar. We don't conform to the Core (Level 1), so we can't conform to the Extended SQL Grammar.
    
    Specified by:
    
    supportsExtendedSQLGrammar in interface DatabaseMetaData
    
    Returns:
    false
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsANSI92EntryLevelSQL
```
public boolean supportsANSI92EntryLevelSQL()
                                    throws SQLException
```
    Does this driver support the ANSI-92 entry level SQL grammar? All JDBC Compliant drivers must return true. We currently report false until 'schema' support is added. Then this should be changed to return true, since we will be mostly compliant (probably more compliant than many other databases) And since this is a requirement for all JDBC drivers we need to get to the point where we can return true.
    
    Specified by:
    
    supportsANSI92EntryLevelSQL in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsANSI92IntermediateSQL
```
public boolean supportsANSI92IntermediateSQL()
                                      throws SQLException
```
    Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.
    
    Specified by:
    
    supportsANSI92IntermediateSQL in interface DatabaseMetaData
    
    Returns:
    false
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsANSI92FullSQL
```
public boolean supportsANSI92FullSQL()
                              throws SQLException
```
    Retrieves whether this database supports the ANSI92 full SQL grammar supported.
    
    Specified by:
    
    supportsANSI92FullSQL in interface DatabaseMetaData
    
    Returns:
    false
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsIntegrityEnhancementFacility
```
public boolean supportsIntegrityEnhancementFacility()
                                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the SQL Integrity Enhancement Facility.
    
    Specified by:
    
    supportsIntegrityEnhancementFacility in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOuterJoins
```
public boolean supportsOuterJoins()
                           throws SQLException
```
    Retrieves whether this database supports some form of outer join.
    
    Specified by:
    
    supportsOuterJoins in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsFullOuterJoins
```
public boolean supportsFullOuterJoins()
                               throws SQLException
```
    Retrieves whether this database supports full nested outer joins.
    
    Specified by:
    
    supportsFullOuterJoins in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsLimitedOuterJoins
```
public boolean supportsLimitedOuterJoins()
                                  throws SQLException
```
    Retrieves whether this database provides limited support for outer joins. (This will be true if the method supportsFullOuterJoins returns true).
    
    Specified by:
    
    supportsLimitedOuterJoins in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSchemaTerm
```
public String getSchemaTerm()
                     throws SQLException
```
    Retrieves the database vendor's preferred term for "schema".
    PostgreSQL doesn't have schemas, but when it does, we'll use the term "schema".
    
    Specified by:
    
    getSchemaTerm in interface DatabaseMetaData
    
    Returns:
    "schema"
    
    Throws:
    
    SQLException - if a database access error occurs
  - getProcedureTerm
```
public String getProcedureTerm()
                        throws SQLException
```
    Retrieves the database vendor's preferred term for "procedure".
    
    Specified by:
    
    getProcedureTerm in interface DatabaseMetaData
    
    Returns:
    "function"
    
    Throws:
    
    SQLException - if a database access error occurs
  - getCatalogTerm
```
public String getCatalogTerm()
                      throws SQLException
```
    Retrieves the database vendor's preferred term for "catalog".
    
    Specified by:
    
    getCatalogTerm in interface DatabaseMetaData
    
    Returns:
    "database"
    
    Throws:
    
    SQLException - if a database access error occurs
  - isCatalogAtStart
```
public boolean isCatalogAtStart()
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog appears at the start of a fully qualified table name. If not, the catalog appears at the end.
    
    Specified by:
    
    isCatalogAtStart in interface DatabaseMetaData
    
    Returns:
    true if the catalog name appears at the beginning of a fully qualified table name; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getCatalogSeparator
```
public String getCatalogSeparator()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the String that this database uses as the separator between a catalog and table name.
    
    Specified by:
    
    getCatalogSeparator in interface DatabaseMetaData
    
    Returns:
    the separator string
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSchemasInDataManipulation
```
public boolean supportsSchemasInDataManipulation()
                                          throws SQLException
```
    Retrieves whether a schema name can be used in a data manipulation statement.
    
    Specified by:
    
    supportsSchemasInDataManipulation in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSchemasInProcedureCalls
```
public boolean supportsSchemasInProcedureCalls()
                                        throws SQLException
```
    Retrieves whether a schema name can be used in a procedure call statement.
    
    Specified by:
    
    supportsSchemasInProcedureCalls in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSchemasInTableDefinitions
```
public boolean supportsSchemasInTableDefinitions()
                                          throws SQLException
```
    Retrieves whether a schema name can be used in a table definition statement.
    
    Specified by:
    
    supportsSchemasInTableDefinitions in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSchemasInIndexDefinitions
```
public boolean supportsSchemasInIndexDefinitions()
                                          throws SQLException
```
    Retrieves whether a schema name can be used in an index definition statement.
    
    Specified by:
    
    supportsSchemasInIndexDefinitions in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSchemasInPrivilegeDefinitions
```
public boolean supportsSchemasInPrivilegeDefinitions()
                                              throws SQLException
```
    Retrieves whether a schema name can be used in a privilege definition statement.
    
    Specified by:
    
    supportsSchemasInPrivilegeDefinitions in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCatalogsInDataManipulation
```
public boolean supportsCatalogsInDataManipulation()
                                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog name can be used in a data manipulation statement.
    
    Specified by:
    
    supportsCatalogsInDataManipulation in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCatalogsInProcedureCalls
```
public boolean supportsCatalogsInProcedureCalls()
                                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog name can be used in a procedure call statement.
    
    Specified by:
    
    supportsCatalogsInProcedureCalls in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCatalogsInTableDefinitions
```
public boolean supportsCatalogsInTableDefinitions()
                                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog name can be used in a table definition statement.
    
    Specified by:
    
    supportsCatalogsInTableDefinitions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCatalogsInIndexDefinitions
```
public boolean supportsCatalogsInIndexDefinitions()
                                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog name can be used in an index definition statement.
    
    Specified by:
    
    supportsCatalogsInIndexDefinitions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCatalogsInPrivilegeDefinitions
```
public boolean supportsCatalogsInPrivilegeDefinitions()
                                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a catalog name can be used in a privilege definition statement.
    
    Specified by:
    
    supportsCatalogsInPrivilegeDefinitions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsPositionedDelete
```
public boolean supportsPositionedDelete()
                                 throws SQLException
```
    We support cursors for gets only it seems. I dont see a method to get a positioned delete.
    
    Specified by:
    
    supportsPositionedDelete in interface DatabaseMetaData
    
    Returns:
    false
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsPositionedUpdate
```
public boolean supportsPositionedUpdate()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports positioned UPDATE statements.
    
    Specified by:
    
    supportsPositionedUpdate in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSelectForUpdate
```
public boolean supportsSelectForUpdate()
                                throws SQLException
```
    Retrieves whether this database supports SELECT FOR UPDATE statements.
    
    Specified by:
    
    supportsSelectForUpdate in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 6.5+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsStoredProcedures
```
public boolean supportsStoredProcedures()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports stored procedure calls that use the stored procedure escape syntax.
    
    Specified by:
    
    supportsStoredProcedures in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSubqueriesInComparisons
```
public boolean supportsSubqueriesInComparisons()
                                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports subqueries in comparison expressions.
    
    Specified by:
    
    supportsSubqueriesInComparisons in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSubqueriesInExists
```
public boolean supportsSubqueriesInExists()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports subqueries in EXISTS expressions.
    
    Specified by:
    
    supportsSubqueriesInExists in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSubqueriesInIns
```
public boolean supportsSubqueriesInIns()
                                throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports subqueries in IN expressions.
    
    Specified by:
    
    supportsSubqueriesInIns in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSubqueriesInQuantifieds
```
public boolean supportsSubqueriesInQuantifieds()
                                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports subqueries in quantified expressions.
    
    Specified by:
    
    supportsSubqueriesInQuantifieds in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsCorrelatedSubqueries
```
public boolean supportsCorrelatedSubqueries()
                                     throws SQLException
```
    Retrieves whether this database supports correlated subqueries.
    
    Specified by:
    
    supportsCorrelatedSubqueries in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsUnion
```
public boolean supportsUnion()
                      throws SQLException
```
    Retrieves whether this database supports SQL UNION.
    
    Specified by:
    
    supportsUnion in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 6.3+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsUnionAll
```
public boolean supportsUnionAll()
                         throws SQLException
```
    Retrieves whether this database supports SQL UNION ALL.
    
    Specified by:
    
    supportsUnionAll in interface DatabaseMetaData
    
    Returns:
    true if connected to PostgreSQL 7.1+
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOpenCursorsAcrossCommit
```
public boolean supportsOpenCursorsAcrossCommit()
                                        throws SQLException
```
    Retrieves whether this database supports keeping cursors open across commits. In PostgreSQL, Cursors are only open within transactions.
    
    Specified by:
    
    supportsOpenCursorsAcrossCommit in interface DatabaseMetaData
    
    Returns:
    true if cursors always remain open; false if they might not remain open
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOpenCursorsAcrossRollback
```
public boolean supportsOpenCursorsAcrossRollback()
                                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports keeping cursors open across rollbacks.
    
    Specified by:
    
    supportsOpenCursorsAcrossRollback in interface DatabaseMetaData
    
    Returns:
    true if cursors always remain open; false if they might not remain open
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOpenStatementsAcrossCommit
```
public boolean supportsOpenStatementsAcrossCommit()
                                           throws SQLException
```
    Retrieves whether this database supports keeping statements open across commits.
    Can statements remain open across commits? They may, but this driver cannot guarantee that. In further reflection. we are talking a Statement object here, so the answer is yes, since the Statement is only a vehicle to ExecSQL()
    
    Specified by:
    
    supportsOpenStatementsAcrossCommit in interface DatabaseMetaData
    
    Returns:
    true
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsOpenStatementsAcrossRollback
```
public boolean supportsOpenStatementsAcrossRollback()
                                             throws SQLException
```
    Retrieves whether this database supports keeping statements open across rollbacks.
    Can statements remain open across rollbacks? They may, but this driver cannot guarantee that. In further contemplation, we are talking a Statement object here, so the answer is yes, since the Statement is only a vehicle to ExecSQL() in Connection
    
    Specified by:
    
    supportsOpenStatementsAcrossRollback in interface DatabaseMetaData
    
    Returns:
    true
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxCharLiteralLength
```
public int getMaxCharLiteralLength()
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters this database allows for a character literal.
    
    Specified by:
    
    getMaxCharLiteralLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed for a character literal; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxBinaryLiteralLength
```
public int getMaxBinaryLiteralLength()
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of hex characters this database allows in an inline binary literal.
    
    Specified by:
    
    getMaxBinaryLiteralLength in interface DatabaseMetaData
    
    Returns:
    max the maximum length (in hex characters) for a binary literal; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnNameLength
```
public int getMaxColumnNameLength()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters this database allows for a column name.
    
    Specified by:
    
    getMaxColumnNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed for a column name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnsInGroupBy
```
public int getMaxColumnsInGroupBy()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of columns this database allows in a GROUP BY clause.
    
    Specified by:
    
    getMaxColumnsInGroupBy in interface DatabaseMetaData
    
    Returns:
    the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnsInIndex
```
public int getMaxColumnsInIndex()
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of columns this database allows in an index.
    
    Specified by:
    
    getMaxColumnsInIndex in interface DatabaseMetaData
    
    Returns:
    the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnsInOrderBy
```
public int getMaxColumnsInOrderBy()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of columns this database allows in an ORDER BY clause.
    
    Specified by:
    
    getMaxColumnsInOrderBy in interface DatabaseMetaData
    
    Returns:
    the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnsInSelect
```
public int getMaxColumnsInSelect()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of columns this database allows in a SELECT list.
    
    Specified by:
    
    getMaxColumnsInSelect in interface DatabaseMetaData
    
    Returns:
    the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxColumnsInTable
```
public int getMaxColumnsInTable()
                         throws SQLException
```
    Retrieves the maximum number of columns this database allows in a table. What is the maximum number of columns in a table? From the CREATE TABLE reference page...
    "The new class is created as a heap with no initial data. A class can have no more than 1600 attributes (realistically, this is limited by the fact that tuple sizes must be less than 8192 bytes)..."
    
    Specified by:
    
    getMaxColumnsInTable in interface DatabaseMetaData
    
    Returns:
    the max columns
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxConnections
```
public int getMaxConnections()
                      throws SQLException
```
    Retrieves the maximum number of concurrent connections to this database that are possible. How many active connection can we have at a time to this database? Well, since it depends on postmaster, which just does a listen() followed by an accept() and fork(), its basically very high. Unless the system runs out of processes, it can be 65535 (the number of aux. ports on a TCP/IP system). I will return 8192 since that is what even the largest system can realistically handle,
    
    Specified by:
    
    getMaxConnections in interface DatabaseMetaData
    
    Returns:
    the maximum number of connections
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxCursorNameLength
```
public int getMaxCursorNameLength()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters that this database allows in a cursor name.
    
    Specified by:
    
    getMaxCursorNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed in a cursor name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxIndexLength
```
public int getMaxIndexLength()
                      throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of bytes this database allows for an index, including all of the parts of the index.
    
    Specified by:
    
    getMaxIndexLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of bytes allowed; this limit includes the composite of all the constituent parts of the index; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxSchemaNameLength
```
public int getMaxSchemaNameLength()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters that this database allows in a schema name.
    
    Specified by:
    
    getMaxSchemaNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed in a schema name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxProcedureNameLength
```
public int getMaxProcedureNameLength()
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters that this database allows in a procedure name.
    
    Specified by:
    
    getMaxProcedureNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed in a procedure name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxCatalogNameLength
```
public int getMaxCatalogNameLength()
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters that this database allows in a catalog name.
    
    Specified by:
    
    getMaxCatalogNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed in a catalog name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxRowSize
```
public int getMaxRowSize()
                  throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of bytes this database allows in a single row.
    
    Specified by:
    
    getMaxRowSize in interface DatabaseMetaData
    
    Returns:
    the maximum number of bytes allowed for a row; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - doesMaxRowSizeIncludeBlobs
```
public boolean doesMaxRowSizeIncludeBlobs()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether the return value for the method getMaxRowSize includes the SQL data types LONGVARCHAR and LONGVARBINARY.
    
    Specified by:
    
    doesMaxRowSizeIncludeBlobs in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxStatementLength
```
public int getMaxStatementLength()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters this database allows in an SQL statement.
    
    Specified by:
    
    getMaxStatementLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed for an SQL statement; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxStatements
```
public int getMaxStatements()
                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of active statements to this database that can be open at the same time.
    
    Specified by:
    
    getMaxStatements in interface DatabaseMetaData
    
    Returns:
    the maximum number of statements that can be open at one time; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxTableNameLength
```
public int getMaxTableNameLength()
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters this database allows in a table name.
    
    Specified by:
    
    getMaxTableNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed for a table name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxTablesInSelect
```
public int getMaxTablesInSelect()
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of tables this database allows in a SELECT statement.
    
    Specified by:
    
    getMaxTablesInSelect in interface DatabaseMetaData
    
    Returns:
    the maximum number of tables allowed in a SELECT statement; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getMaxUserNameLength
```
public int getMaxUserNameLength()
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the maximum number of characters this database allows in a user name.
    
    Specified by:
    
    getMaxUserNameLength in interface DatabaseMetaData
    
    Returns:
    the maximum number of characters allowed for a user name; a result of zero means that there is no limit or the limit is not known
    
    Throws:
    
    SQLException - if a database access error occurs
  - getDefaultTransactionIsolation
```
public int getDefaultTransactionIsolation()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves this database's default transaction isolation level. The possible values are defined in java.sql.Connection.
    
    Specified by:
    
    getDefaultTransactionIsolation in interface DatabaseMetaData
    
    Returns:
    the default isolation level
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    Connection
  - supportsTransactions
```
public boolean supportsTransactions()
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports transactions. If not, invoking the method commit is a noop, and the isolation level is TRANSACTION_NONE.
    
    Specified by:
    
    supportsTransactions in interface DatabaseMetaData
    
    Returns:
    true if transactions are supported; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsTransactionIsolationLevel
```
public boolean supportsTransactionIsolationLevel(int level)
                                          throws SQLException
```
    Retrieves whether this database supports the given transaction isolation level.
    We only support TRANSACTION_SERIALIZABLE and TRANSACTION_READ_COMMITTED before 8.0; from 8.0 READ_UNCOMMITTED and REPEATABLE_READ are accepted aliases for READ_COMMITTED.
    
    Specified by:
    
    supportsTransactionIsolationLevel in interface DatabaseMetaData
    
    Parameters:
    level - one of the transaction isolation levels defined in java.sql.Connection
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    Connection
  - supportsDataDefinitionAndDataManipulationTransactions
```
public boolean supportsDataDefinitionAndDataManipulationTransactions()
                                                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports both data definition and data manipulation statements within a transaction.
    
    Specified by:
    
    supportsDataDefinitionAndDataManipulationTransactions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsDataManipulationTransactionsOnly
```
public boolean supportsDataManipulationTransactionsOnly()
                                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports only data manipulation statements within a transaction.
    
    Specified by:
    
    supportsDataManipulationTransactionsOnly in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - dataDefinitionCausesTransactionCommit
```
public boolean dataDefinitionCausesTransactionCommit()
                                              throws SQLException
```
    Does a data definition statement within a transaction force the transaction to commit? It seems to mean something like:
```
 CREATE TABLE T (A INT);
 INSERT INTO T (A) VALUES (2);
 BEGIN;
 UPDATE T SET A = A + 1;
 CREATE TABLE X (A INT);
 SELECT A FROM T INTO X;
 COMMIT;
 
```
    does the CREATE TABLE call cause a commit? The answer is no.
    Specified by:
    
    dataDefinitionCausesTransactionCommit in interface DatabaseMetaData
    
    Returns:
    true if so
    
    Throws:
    
    SQLException - if a database access error occurs
  - dataDefinitionIgnoredInTransactions
```
public boolean dataDefinitionIgnoredInTransactions()
                                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database ignores a data definition statement within a transaction.
    
    Specified by:
    
    dataDefinitionIgnoredInTransactions in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - escapeQuotes
```
protected String escapeQuotes(String s)
                       throws SQLException
```
    Turn the provided value into a valid string literal for direct inclusion into a query. This includes the single quotes needed around it.
    
    Parameters:
    s - input value
    
    Returns:
    string literal for direct inclusion into a query
    
    Throws:
    
    SQLException - if something wrong happens
  - getProcedures
```
public ResultSet getProcedures(String catalog,
                      String schemaPattern,
                      String procedureNamePattern)
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the stored procedures available in the given catalog.
    Only procedure descriptions matching the schema and procedure name criteria are returned. They are ordered by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME and SPECIFIC_ NAME.
    Each procedure description has the the following columns:
    1. PROCEDURE_CAT String => procedure catalog (may be null)
    2. PROCEDURE_SCHEM String => procedure schema (may be null)
    3. PROCEDURE_NAME String => procedure name
    4. reserved for future use
    5. reserved for future use
    6. reserved for future use
    7. REMARKS String => explanatory comment on the procedure
    8. PROCEDURE_TYPE short => kind of procedure:
      
      procedureResultUnknown - Cannot determine if a return value will be returned
      procedureNoResult - Does not return a return value
      procedureReturnsResult - Returns a return value
    9. SPECIFIC_NAME String => The name which uniquely identifies this procedure within its schema.
    A user may not have permissions to execute any of the procedures that are returned by getProcedures
    Specified by:
    
    getProcedures in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    procedureNamePattern - a procedure name pattern; must match the procedure name as it is stored in the database
    
    Returns:
    ResultSet - each row is a procedure description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getProcedureColumns
```
public ResultSet getProcedureColumns(String catalog,
                            String schemaPattern,
                            String procedureNamePattern,
                            String columnNamePattern)
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the given catalog's stored procedure parameter and result columns.
    Only descriptions matching the schema, procedure and parameter name criteria are returned. They are ordered by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME and SPECIFIC_NAME. Within this, the return value, if any, is first. Next are the parameter descriptions in call order. The column descriptions follow in column number order.
    Each row in the ResultSet is a parameter description or column description with the following fields:
    1. PROCEDURE_CAT String => procedure catalog (may be null)
    2. PROCEDURE_SCHEM String => procedure schema (may be null)
    3. PROCEDURE_NAME String => procedure name
    4. COLUMN_NAME String => column/parameter name
    5. COLUMN_TYPE Short => kind of column/parameter:
      
      procedureColumnUnknown - nobody knows
      procedureColumnIn - IN parameter
      procedureColumnInOut - INOUT parameter
      procedureColumnOut - OUT parameter
      procedureColumnReturn - procedure return value
      procedureColumnResult - result column in ResultSet
    6. DATA_TYPE int => SQL type from java.sql.Types
    7. TYPE_NAME String => SQL type name, for a UDT type the type name is fully qualified
    8. PRECISION int => precision
    9. LENGTH int => length in bytes of data
    10. SCALE short => scale - null is returned for data types where SCALE is not applicable.
    11. RADIX short => radix
    12. NULLABLE short => can it contain NULL.
      
      procedureNoNulls - does not allow NULL values
      procedureNullable - allows NULL values
      procedureNullableUnknown - nullability unknown
    13. REMARKS String => comment describing parameter/column
    14. COLUMN_DEF String => default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be null)
      
      The string NULL (not enclosed in quotes) - if NULL was specified as the default value
      TRUNCATE (not enclosed in quotes) - if the specified default value cannot be represented without truncation
      NULL - if a default value was not specified
    15. SQL_DATA_TYPE int => reserved for future use
    16. SQL_DATETIME_SUB int => reserved for future use
    17. CHAR_OCTET_LENGTH int => the maximum length of binary and character based columns. For any other datatype the returned value is a NULL
    18. ORDINAL_POSITION int => the ordinal position, starting from 1, for the input and output parameters for a procedure. A value of 0 is returned if this row describes the procedure's return value. For result set columns, it is the ordinal position of the column in the result set starting from 1. If there are multiple result sets, the column ordinal positions are implementation defined.
    19. IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
      
      YES --- if the column can include NULLs
      NO --- if the column cannot include NULLs
      empty string --- if the nullability for the column is unknown
    20. SPECIFIC_NAME String => the name which uniquely identifies this procedure within its schema.
    Note: Some databases may not return the column descriptions for a procedure.
    The PRECISION column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getProcedureColumns in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    procedureNamePattern - a procedure name pattern; must match the procedure name as it is stored in the database
    columnNamePattern - a column name pattern; must match the column name as it is stored in the database
    
    Returns:
    ResultSet - each row describes a stored procedure parameter or column
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getTables
```
public ResultSet getTables(String catalog,
                  String schemaPattern,
                  String tableNamePattern,
                  String[] types)
                    throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the tables available in the given catalog. Only table descriptions matching the catalog, schema, table name and type criteria are returned. They are ordered by TABLE_TYPE, TABLE_CAT, TABLE_SCHEM and TABLE_NAME.
    Each table description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. TABLE_TYPE String => table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
    5. REMARKS String => explanatory comment on the table
    6. TYPE_CAT String => the types catalog (may be null)
    7. TYPE_SCHEM String => the types schema (may be null)
    8. TYPE_NAME String => type name (may be null)
    9. SELF_REFERENCING_COL_NAME String => name of the designated "identifier" column of a typed table (may be null)
    10. REF_GENERATION String => specifies how values in SELF_REFERENCING_COL_NAME are created. Values are "SYSTEM", "USER", "DERIVED". (may be null)
    Note: Some databases may not return information for all tables.
    Specified by:
    
    getTables in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    tableNamePattern - a table name pattern; must match the table name as it is stored in the database
    types - a list of table types, which must be from the list of table types returned from DatabaseMetaData.getTableTypes(),to include; null returns all types
    
    Returns:
    ResultSet - each row is a table description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getSchemas
```
public ResultSet getSchemas()
                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves the schema names available in this database. The results are ordered by TABLE_CATALOG and TABLE_SCHEM.
    The schema columns are:
    1. TABLE_SCHEM String => schema name
    2. TABLE_CATALOG String => catalog name (may be null)
    Specified by:
    
    getSchemas in interface DatabaseMetaData
    
    Returns:
    a ResultSet object in which each row is a schema description
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSchemas
```
public ResultSet getSchemas(String catalog,
                   String schemaPattern)
                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves the schema names available in this database. The results are ordered by TABLE_CATALOG and TABLE_SCHEM.
    The schema columns are:
    1. TABLE_SCHEM String => schema name
    2. TABLE_CATALOG String => catalog name (may be null)
    Specified by:
    
    getSchemas in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database;"" retrieves those without a catalog; null means catalog name should not be used to narrow down the search.
    schemaPattern - a schema name; must match the schema name as it is stored in the database; null means schema name should not be used to narrow down the search.
    
    Returns:
    a ResultSet object in which each row is a schema description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getCatalogs
```
public ResultSet getCatalogs()
                      throws SQLException
```
    PostgreSQL does not support multiple catalogs from a single connection, so to reduce confusion we only return the current catalog. Retrieves the catalog names available in this database. The results are ordered by catalog name.
    The catalog column is:
    1. TABLE_CAT String => catalog name
    Specified by:
    
    getCatalogs in interface DatabaseMetaData
    
    Returns:
    a ResultSet object in which each row has a single String column that is a catalog name
    
    Throws:
    
    SQLException - if a database access error occurs
  - getTableTypes
```
public ResultSet getTableTypes()
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves the table types available in this database. The results are ordered by table type.
    The table type is:
    1. TABLE_TYPE String => table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
    Specified by:
    
    getTableTypes in interface DatabaseMetaData
    
    Returns:
    a ResultSet object in which each row has a single String column that is a table type
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumns
```
public ResultSet getColumns(String catalog,
                   String schemaPattern,
                   String tableNamePattern,
                   String columnNamePattern)
                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of table columns available in the specified catalog.
    Only column descriptions matching the catalog, schema, table and column name criteria are returned. They are ordered by TABLE_CAT,TABLE_SCHEM, TABLE_NAME, and ORDINAL_POSITION.
    Each column description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. COLUMN_NAME String => column name
    5. DATA_TYPE int => SQL type from java.sql.Types
    6. TYPE_NAME String => Data source dependent type name, for a UDT the type name is fully qualified
    7. COLUMN_SIZE int => column size.
    8. BUFFER_LENGTH is not used.
    9. DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where DECIMAL_DIGITS is not applicable.
    10. NUM_PREC_RADIX int => Radix (typically either 10 or 2)
    11. NULLABLE int => is NULL allowed.
      
      columnNoNulls - might not allow NULL values
      columnNullable - definitely allows NULL values
      columnNullableUnknown - nullability unknown
    12. REMARKS String => comment describing column (may be null)
    13. COLUMN_DEF String => default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be null)
    14. SQL_DATA_TYPE int => unused
    15. SQL_DATETIME_SUB int => unused
    16. CHAR_OCTET_LENGTH int => for char types the maximum number of bytes in the column
    17. ORDINAL_POSITION int => index of column in table (starting at 1)
    18. IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
      
      YES --- if the column can include NULLs
      NO --- if the column cannot include NULLs
      empty string --- if the nullability for the column is unknown
    19. SCOPE_CATALOG String => catalog of table that is the scope of a reference attribute (null if DATA_TYPE isn't REF)
    20. SCOPE_SCHEMA String => schema of table that is the scope of a reference attribute (null if the DATA_TYPE isn't REF)
    21. SCOPE_TABLE String => table name that this the scope of a reference attribute (null if the DATA_TYPE isn't REF)
    22. SOURCE_DATA_TYPE short => source type of a distinct type or user-generated Ref type, SQL type from java.sql.Types (null if DATA_TYPE isn't DISTINCT or user-generated REF)
    23. IS_AUTOINCREMENT String => Indicates whether this column is auto incremented
      
      YES --- if the column is auto incremented
      NO --- if the column is not auto incremented
      empty string --- if it cannot be determined whether the column is auto incremented
    24. IS_GENERATEDCOLUMN String => Indicates whether this is a generated column
      
      YES --- if this a generated column
      NO --- if this not a generated column
      empty string --- if it cannot be determined whether this is a generated column
    The COLUMN_SIZE column specifies the column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getColumns in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    tableNamePattern - a table name pattern; must match the table name as it is stored in the database
    columnNamePattern - a column name pattern; must match the column name as it is stored in the database
    
    Returns:
    ResultSet - each row is a column description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getColumnPrivileges
```
public ResultSet getColumnPrivileges(String catalog,
                            String schema,
                            String table,
                            String columnNamePattern)
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the access rights for a table's columns.
    Only privileges matching the column name criteria are returned. They are ordered by COLUMN_NAME and PRIVILEGE.
    Each privilige description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. COLUMN_NAME String => column name
    5. GRANTOR String => grantor of access (may be null)
    6. GRANTEE String => grantee of access
    7. PRIVILEGE String => name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
    8. IS_GRANTABLE String => "YES" if grantee is permitted to grant to others; "NO" if not; null if unknown
    Specified by:
    
    getColumnPrivileges in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in the database
    columnNamePattern - a column name pattern; must match the column name as it is stored in the database
    
    Returns:
    ResultSet - each row is a column privilege description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getTablePrivileges
```
public ResultSet getTablePrivileges(String catalog,
                           String schemaPattern,
                           String tableNamePattern)
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the access rights for each table available in a catalog. Note that a table privilege applies to one or more columns in the table. It would be wrong to assume that this privilege applies to all columns (this may be true for some systems but is not true for all.)
    Only privileges matching the schema and table name criteria are returned. They are ordered by TABLE_CAT, TABLE_SCHEM, TABLE_NAME, and PRIVILEGE.
    Each privilige description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. GRANTOR String => grantor of access (may be null)
    5. GRANTEE String => grantee of access
    6. PRIVILEGE String => name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
    7. IS_GRANTABLE String => "YES" if grantee is permitted to grant to others; "NO" if not; null if unknown
    Specified by:
    
    getTablePrivileges in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    tableNamePattern - a table name pattern; must match the table name as it is stored in the database
    
    Returns:
    ResultSet - each row is a table privilege description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - parseACL
```
public Map<String,Map<String,List<String[]>>> parseACL(String aclArray,
                                              String owner)
```
    Take the a String representing an array of ACLs and return a Map mapping the SQL permission name to a List of usernames who have that permission. For instance: SELECT -> user1 -> list of [grantor, grantable]
    
    Parameters:
    aclArray - ACL array
    owner - owner
    
    Returns:
    a Map mapping the SQL permission name
  - getBestRowIdentifier
```
public ResultSet getBestRowIdentifier(String catalog,
                             String schema,
                             String table,
                             int scope,
                             boolean nullable)
                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of a table's optimal set of columns that uniquely identifies a row. They are ordered by SCOPE.
    Each column description has the following columns:
    1. SCOPE short => actual scope of result
      
      bestRowTemporary - very temporary, while using row
      bestRowTransaction - valid for remainder of current transaction
      bestRowSession - valid for remainder of current session
    2. COLUMN_NAME String => column name
    3. DATA_TYPE int => SQL data type from java.sql.Types
    4. TYPE_NAME String => Data source dependent type name, for a UDT the type name is fully qualified
    5. COLUMN_SIZE int => precision
    6. BUFFER_LENGTH int => not used
    7. DECIMAL_DIGITS short => scale - Null is returned for data types where DECIMAL_DIGITS is not applicable.
    8. PSEUDO_COLUMN short => is this a pseudo column like an Oracle ROWID
      
      bestRowUnknown - may or may not be pseudo column
      bestRowNotPseudo - is NOT a pseudo column
      bestRowPseudo - is a pseudo column
    The COLUMN_SIZE column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getBestRowIdentifier in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in the database
    scope - the scope of interest; use same values as SCOPE
    nullable - include columns that are nullable.
    
    Returns:
    ResultSet - each row is a column description
    
    Throws:
    
    SQLException - if a database access error occurs
  - getVersionColumns
```
public ResultSet getVersionColumns(String catalog,
                          String schema,
                          String table)
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of a table's columns that are automatically updated when any value in a row is updated. They are unordered.
    Each column description has the following columns:
    1. SCOPE short => is not used
    2. COLUMN_NAME String => column name
    3. DATA_TYPE int => SQL data type from java.sql.Types
    4. TYPE_NAME String => Data source-dependent type name
    5. COLUMN_SIZE int => precision
    6. BUFFER_LENGTH int => length of column value in bytes
    7. DECIMAL_DIGITS short => scale - Null is returned for data types where DECIMAL_DIGITS is not applicable.
    8. PSEUDO_COLUMN short => whether this is pseudo column like an Oracle ROWID
      
      versionColumnUnknown - may or may not be pseudo column
      versionColumnNotPseudo - is NOT a pseudo column
      versionColumnPseudo - is a pseudo column
    The COLUMN_SIZE column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getVersionColumns in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in the database
    
    Returns:
    a ResultSet object in which each row is a column description
    
    Throws:
    
    SQLException - if a database access error occurs
  - getPrimaryKeys
```
public ResultSet getPrimaryKeys(String catalog,
                       String schema,
                       String table)
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the given table's primary key columns. They are ordered by COLUMN_NAME.
    Each primary key column description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. COLUMN_NAME String => column name
    5. KEY_SEQ short => sequence number within primary key( a value of 1 represents the first column of the primary key, a value of 2 would represent the second column within the primary key).
    6. PK_NAME String => primary key name (may be null)
    Specified by:
    
    getPrimaryKeys in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in the database
    
    Returns:
    ResultSet - each row is a primary key column description
    
    Throws:
    
    SQLException - if a database access error occurs
  - getImportedExportedKeys
```
protected ResultSet getImportedExportedKeys(String primaryCatalog,
                                String primarySchema,
                                String primaryTable,
                                String foreignCatalog,
                                String foreignSchema,
                                String foreignTable)
                                     throws SQLException
```
    Parameters:
    primaryCatalog - primary catalog
    primarySchema - primary schema
    primaryTable - if provided will get the keys exported by this table
    foreignCatalog - foreign catalog
    foreignSchema - foreign schema
    foreignTable - if provided will get the keys imported by this table
    
    Returns:
    ResultSet
    
    Throws:
    
    SQLException - if something wrong happens
  - getImportedKeys
```
public ResultSet getImportedKeys(String catalog,
                        String schema,
                        String table)
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the primary key columns that are referenced by the given table's foreign key columns (the primary keys imported by a table). They are ordered by PKTABLE_CAT, PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
    Each primary key column description has the following columns:
    1. PKTABLE_CAT String => primary key table catalog being imported (may be null)
    2. PKTABLE_SCHEM String => primary key table schema being imported (may be null)
    3. PKTABLE_NAME String => primary key table name being imported
    4. PKCOLUMN_NAME String => primary key column name being imported
    5. FKTABLE_CAT String => foreign key table catalog (may be null)
    6. FKTABLE_SCHEM String => foreign key table schema (may be null)
    7. FKTABLE_NAME String => foreign key table name
    8. FKCOLUMN_NAME String => foreign key column name
    9. KEY_SEQ short => sequence number within a foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
    10. UPDATE_RULE short => What happens to a foreign key when the primary key is updated:
      
      importedNoAction - do not allow update of primary key if it has been imported
      importedKeyCascade - change imported key to agree with primary key update
      importedKeySetNull - change imported key to NULL if its primary key has been updated
      importedKeySetDefault - change imported key to default values if its primary key has been updated
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    11. DELETE_RULE short => What happens to the foreign key when primary is deleted.
      
      importedKeyNoAction - do not allow delete of primary key if it has been imported
      importedKeyCascade - delete rows that import a deleted key
      importedKeySetNull - change imported key to NULL if its primary key has been deleted
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
      importedKeySetDefault - change imported key to default if its primary key has been deleted
    12. FK_NAME String => foreign key name (may be null)
    13. PK_NAME String => primary key name (may be null)
    14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
      
      importedKeyInitiallyDeferred - see SQL92 for definition
      importedKeyInitiallyImmediate - see SQL92 for definition
      importedKeyNotDeferrable - see SQL92 for definition
    Specified by:
    
    getImportedKeys in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in the database
    
    Returns:
    ResultSet - each row is a primary key column description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getExportedKeys(java.lang.String, java.lang.String, java.lang.String)
  - getExportedKeys
```
public ResultSet getExportedKeys(String catalog,
                        String schema,
                        String table)
                          throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the foreign key columns that reference the given table's primary key columns (the foreign keys exported by a table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.
    Each foreign key column description has the following columns:
    1. PKTABLE_CAT String => primary key table catalog (may be null)
    2. PKTABLE_SCHEM String => primary key table schema (may be null)
    3. PKTABLE_NAME String => primary key table name
    4. PKCOLUMN_NAME String => primary key column name
    5. FKTABLE_CAT String => foreign key table catalog (may be null) being exported (may be null)
    6. FKTABLE_SCHEM String => foreign key table schema (may be null) being exported (may be null)
    7. FKTABLE_NAME String => foreign key table name being exported
    8. FKCOLUMN_NAME String => foreign key column name being exported
    9. KEY_SEQ short => sequence number within foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
    10. UPDATE_RULE short => What happens to foreign key when primary is updated:
      
      importedNoAction - do not allow update of primary key if it has been imported
      importedKeyCascade - change imported key to agree with primary key update
      importedKeySetNull - change imported key to NULL if its primary key has been updated
      importedKeySetDefault - change imported key to default values if its primary key has been updated
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    11. DELETE_RULE short => What happens to the foreign key when primary is deleted.
      
      importedKeyNoAction - do not allow delete of primary key if it has been imported
      importedKeyCascade - delete rows that import a deleted key
      importedKeySetNull - change imported key to NULL if its primary key has been deleted
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
      importedKeySetDefault - change imported key to default if its primary key has been deleted
    12. FK_NAME String => foreign key name (may be null)
    13. PK_NAME String => primary key name (may be null)
    14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
      
      importedKeyInitiallyDeferred - see SQL92 for definition
      importedKeyInitiallyImmediate - see SQL92 for definition
      importedKeyNotDeferrable - see SQL92 for definition
    Specified by:
    
    getExportedKeys in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in this database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    table - a table name; must match the table name as it is stored in this database
    
    Returns:
    a ResultSet object in which each row is a foreign key column description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getImportedKeys(java.lang.String, java.lang.String, java.lang.String)
  - getCrossReference
```
public ResultSet getCrossReference(String primaryCatalog,
                          String primarySchema,
                          String primaryTable,
                          String foreignCatalog,
                          String foreignSchema,
                          String foreignTable)
                            throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the foreign key columns in the given foreign key table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table). The number of columns returned from the parent table must match the number of columns that make up the foreign key. They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.
    Each foreign key column description has the following columns:
    1. PKTABLE_CAT String => parent key table catalog (may be null)
    2. PKTABLE_SCHEM String => parent key table schema (may be null)
    3. PKTABLE_NAME String => parent key table name
    4. PKCOLUMN_NAME String => parent key column name
    5. FKTABLE_CAT String => foreign key table catalog (may be null) being exported (may be null)
    6. FKTABLE_SCHEM String => foreign key table schema (may be null) being exported (may be null)
    7. FKTABLE_NAME String => foreign key table name being exported
    8. FKCOLUMN_NAME String => foreign key column name being exported
    9. KEY_SEQ short => sequence number within foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
    10. UPDATE_RULE short => What happens to foreign key when parent key is updated:
      
      importedNoAction - do not allow update of parent key if it has been imported
      importedKeyCascade - change imported key to agree with parent key update
      importedKeySetNull - change imported key to NULL if its parent key has been updated
      importedKeySetDefault - change imported key to default values if its parent key has been updated
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    11. DELETE_RULE short => What happens to the foreign key when parent key is deleted.
      
      importedKeyNoAction - do not allow delete of parent key if it has been imported
      importedKeyCascade - delete rows that import a deleted key
      importedKeySetNull - change imported key to NULL if its primary key has been deleted
      importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
      importedKeySetDefault - change imported key to default if its parent key has been deleted
    12. FK_NAME String => foreign key name (may be null)
    13. PK_NAME String => parent key name (may be null)
    14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
      
      importedKeyInitiallyDeferred - see SQL92 for definition
      importedKeyInitiallyImmediate - see SQL92 for definition
      importedKeyNotDeferrable - see SQL92 for definition
    Specified by:
    
    getCrossReference in interface DatabaseMetaData
    
    Parameters:
    primaryCatalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
    primarySchema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means drop schema name from the selection criteria
    primaryTable - the name of the table that exports the key; must match the table name as it is stored in the database
    foreignCatalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
    foreignSchema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means drop schema name from the selection criteria
    foreignTable - the name of the table that imports the key; must match the table name as it is stored in the database
    
    Returns:
    ResultSet - each row is a foreign key column description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getImportedKeys(java.lang.String, java.lang.String, java.lang.String)
  - getTypeInfo
```
public ResultSet getTypeInfo()
                      throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of all the data types supported by this database. They are ordered by DATA_TYPE and then by how closely the data type maps to the corresponding JDBC SQL type.
    If the database supports SQL distinct types, then getTypeInfo() will return a single row with a TYPE_NAME of DISTINCT and a DATA_TYPE of Types.DISTINCT. If the database supports SQL structured types, then getTypeInfo() will return a single row with a TYPE_NAME of STRUCT and a DATA_TYPE of Types.STRUCT.
    If SQL distinct or structured types are supported, then information on the individual types may be obtained from the getUDTs() method.
    Each type description has the following columns:
    1. TYPE_NAME String => Type name
    2. DATA_TYPE int => SQL data type from java.sql.Types
    3. PRECISION int => maximum precision
    4. LITERAL_PREFIX String => prefix used to quote a literal (may be null)
    5. LITERAL_SUFFIX String => suffix used to quote a literal (may be null)
    6. CREATE_PARAMS String => parameters used in creating the type (may be null)
    7. NULLABLE short => can you use NULL for this type.
      
      typeNoNulls - does not allow NULL values
      typeNullable - allows NULL values
      typeNullableUnknown - nullability unknown
    8. CASE_SENSITIVE boolean=> is it case sensitive.
    9. SEARCHABLE short => can you use "WHERE" based on this type:
      
      typePredNone - No support
      typePredChar - Only supported with WHERE .. LIKE
      typePredBasic - Supported except for WHERE .. LIKE
      typeSearchable - Supported for all WHERE ..
    10. UNSIGNED_ATTRIBUTE boolean => is it unsigned.
    11. FIXED_PREC_SCALE boolean => can it be a money value.
    12. AUTO_INCREMENT boolean => can it be used for an auto-increment value.
    13. LOCAL_TYPE_NAME String => localized version of type name (may be null)
    14. MINIMUM_SCALE short => minimum scale supported
    15. MAXIMUM_SCALE short => maximum scale supported
    16. SQL_DATA_TYPE int => unused
    17. SQL_DATETIME_SUB int => unused
    18. NUM_PREC_RADIX int => usually 2 or 10
    The PRECISION column represents the maximum column size that the server supports for the given datatype. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getTypeInfo in interface DatabaseMetaData
    
    Returns:
    a ResultSet object in which each row is an SQL type description
    
    Throws:
    
    SQLException - if a database access error occurs
  - getIndexInfo
```
public ResultSet getIndexInfo(String catalog,
                     String schema,
                     String tableName,
                     boolean unique,
                     boolean approximate)
                       throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the given table's indices and statistics. They are ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.
    Each index column description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. NON_UNIQUE boolean => Can index values be non-unique. false when TYPE is tableIndexStatistic
    5. INDEX_QUALIFIER String => index catalog (may be null); null when TYPE is tableIndexStatistic
    6. INDEX_NAME String => index name; null when TYPE is tableIndexStatistic
    7. TYPE short => index type:
      
      tableIndexStatistic - this identifies table statistics that are returned in conjuction with a table's index descriptions
      tableIndexClustered - this is a clustered index
      tableIndexHashed - this is a hashed index
      tableIndexOther - this is some other style of index
    8. ORDINAL_POSITION short => column sequence number within index; zero when TYPE is tableIndexStatistic
    9. COLUMN_NAME String => column name; null when TYPE is tableIndexStatistic
    10. ASC_OR_DESC String => column sort sequence, "A" => ascending, "D" => descending, may be null if sort sequence is not supported; null when TYPE is tableIndexStatistic
    11. CARDINALITY int => When TYPE is tableIndexStatistic, then this is the number of rows in the table; otherwise, it is the number of unique values in the index.
    12. PAGES int => When TYPE is tableIndexStatisic then this is the number of pages used for the table, otherwise it is the number of pages used for the current index.
    13. FILTER_CONDITION String => Filter condition, if any. (may be null)
    Specified by:
    
    getIndexInfo in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in this database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schema - a schema name; must match the schema name as it is stored in this database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    tableName - a table name; must match the table name as it is stored in this database
    unique - when true, return only indices for unique values; when false, return indices regardless of whether unique or not
    approximate - when true, result is allowed to reflect approximate or out of data values; when false, results are requested to be accurate
    
    Returns:
    ResultSet - each row is an index column description
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsResultSetType
```
public boolean supportsResultSetType(int type)
                              throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the given result set type.
    
    Specified by:
    
    supportsResultSetType in interface DatabaseMetaData
    
    Parameters:
    type - defined in java.sql.ResultSet
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    Connection
  - supportsResultSetConcurrency
```
public boolean supportsResultSetConcurrency(int type,
                                   int concurrency)
                                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the given concurrency type in combination with the given result set type.
    
    Specified by:
    
    supportsResultSetConcurrency in interface DatabaseMetaData
    
    Parameters:
    type - defined in java.sql.ResultSet
    concurrency - type defined in java.sql.ResultSet
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    Connection
  - ownUpdatesAreVisible
```
public boolean ownUpdatesAreVisible(int type)
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether for the given type of ResultSet object, the result set's own updates are visible.
    
    Specified by:
    
    ownUpdatesAreVisible in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if updates are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - ownDeletesAreVisible
```
public boolean ownDeletesAreVisible(int type)
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a result set's own deletes are visible.
    
    Specified by:
    
    ownDeletesAreVisible in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if deletes are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - ownInsertsAreVisible
```
public boolean ownInsertsAreVisible(int type)
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a result set's own inserts are visible.
    
    Specified by:
    
    ownInsertsAreVisible in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if inserts are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - othersUpdatesAreVisible
```
public boolean othersUpdatesAreVisible(int type)
                                throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether updates made by others are visible.
    
    Specified by:
    
    othersUpdatesAreVisible in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if updates made by others are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - othersDeletesAreVisible
```
public boolean othersDeletesAreVisible(int i)
                                throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether deletes made by others are visible.
    
    Specified by:
    
    othersDeletesAreVisible in interface DatabaseMetaData
    
    Parameters:
    i - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if deletes made by others are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - othersInsertsAreVisible
```
public boolean othersInsertsAreVisible(int type)
                                throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether inserts made by others are visible.
    
    Specified by:
    
    othersInsertsAreVisible in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if inserts made by others are visible for the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - updatesAreDetected
```
public boolean updatesAreDetected(int type)
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether or not a visible row update can be detected by calling the method ResultSet.rowUpdated.
    
    Specified by:
    
    updatesAreDetected in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if changes are detected by the result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - deletesAreDetected
```
public boolean deletesAreDetected(int i)
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether or not a visible row delete can be detected by calling the method ResultSet.rowDeleted. If the method deletesAreDetected returns false, it means that deleted rows are removed from the result set.
    
    Specified by:
    
    deletesAreDetected in interface DatabaseMetaData
    
    Parameters:
    i - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if deletes are detected by the given result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - insertsAreDetected
```
public boolean insertsAreDetected(int type)
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether or not a visible row insert can be detected by calling the method ResultSet.rowInserted.
    
    Specified by:
    
    insertsAreDetected in interface DatabaseMetaData
    
    Parameters:
    type - the ResultSet type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
    
    Returns:
    true if changes are detected by the specified result set type; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsBatchUpdates
```
public boolean supportsBatchUpdates()
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports batch updates.
    
    Specified by:
    
    supportsBatchUpdates in interface DatabaseMetaData
    
    Returns:
    true if this database supports batch upcates; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getUDTs
```
public ResultSet getUDTs(String catalog,
                String schemaPattern,
                String typeNamePattern,
                int[] types)
                  throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the user-defined types (UDTs) defined in a particular schema. Schema-specific UDTs may have type JAVA_OBJECT, STRUCT, or DISTINCT.
    Only types matching the catalog, schema, type name and type criteria are returned. They are ordered by DATA_TYPE, TYPE_CAT, TYPE_SCHEM and TYPE_NAME. The type name parameter may be a fully-qualified name. In this case, the catalog and schemaPattern parameters are ignored.
    Each type description has the following columns:
    1. TYPE_CAT String => the type's catalog (may be null)
    2. TYPE_SCHEM String => type's schema (may be null)
    3. TYPE_NAME String => type name
    4. CLASS_NAME String => Java class name
    5. DATA_TYPE int => type value defined in java.sql.Types. One of JAVA_OBJECT, STRUCT, or DISTINCT
    6. REMARKS String => explanatory comment on the type
    7. BASE_TYPE short => type code of the source type of a DISTINCT type or the type that implements the user-generated reference type of the SELF_REFERENCING_COLUMN of a structured type as defined in java.sql.Types (null if DATA_TYPE is not DISTINCT or not STRUCT with REFERENCE_GENERATION = USER_DEFINED)
    Note: If the driver does not support UDTs, an empty result set is returned.
    Specified by:
    
    getUDTs in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema pattern name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    typeNamePattern - a type name pattern; must match the type name as it is stored in the database; may be a fully qualified name
    types - a list of user-defined types (JAVA_OBJECT, STRUCT, or DISTINCT) to include; null returns all types
    
    Returns:
    ResultSet object in which each row describes a UDT
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getConnection
```
public Connection getConnection()
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves the connection that produced this metadata object.
    
    Specified by:
    
    getConnection in interface DatabaseMetaData
    
    Returns:
    the connection that produced this metadata object
    
    Throws:
    
    SQLException - if a database access error occurs
  - createMetaDataStatement
```
protected Statement createMetaDataStatement()
                                     throws SQLException
```
    Throws:
    
    SQLException
  - getMaxLogicalLobSize
```
public long getMaxLogicalLobSize()
                          throws SQLException
```
    Throws:
    
    SQLException
  - supportsRefCursors
```
public boolean supportsRefCursors()
                           throws SQLException
```
    Throws:
    
    SQLException
  - getRowIdLifetime
```
public RowIdLifetime getRowIdLifetime()
                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Indicates whether or not this data source supports the SQL ROWID type, and if so the lifetime for which a RowId object remains valid.
    The returned int values have the following relationship:
```
     ROWID_UNSUPPORTED < ROWID_VALID_OTHER < ROWID_VALID_TRANSACTION
         < ROWID_VALID_SESSION < ROWID_VALID_FOREVER
 
```
    so conditional logic such as
```
     if (metadata.getRowIdLifetime() > DatabaseMetaData.ROWID_VALID_TRANSACTION)
 
```
    can be used. Valid Forever means valid across all Sessions, and valid for a Session means valid across all its contained Transactions.
    Specified by:
    
    getRowIdLifetime in interface DatabaseMetaData
    
    Returns:
    the status indicating the lifetime of a RowId
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsStoredFunctionsUsingCallSyntax
```
public boolean supportsStoredFunctionsUsingCallSyntax()
                                               throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports invoking user-defined or vendor functions using the stored procedure escape syntax.
    
    Specified by:
    
    supportsStoredFunctionsUsingCallSyntax in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - autoCommitFailureClosesAllResultSets
```
public boolean autoCommitFailureClosesAllResultSets()
                                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a SQLException while autoCommit is true inidcates that all open ResultSets are closed, even ones that are holdable. When a SQLException occurs while autocommit is true, it is vendor specific whether the JDBC driver responds with a commit operation, a rollback operation, or by doing neither a commit nor a rollback. A potential result of this difference is in whether or not holdable ResultSets are closed.
    
    Specified by:
    
    autoCommitFailureClosesAllResultSets in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getClientInfoProperties
```
public ResultSet getClientInfoProperties()
                                  throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a list of the client info properties that the driver supports. The result set contains the following columns
    1. NAME String=> The name of the client info property
    2. MAX_LEN int=> The maximum length of the value for the property
    3. DEFAULT_VALUE String=> The default value of the property
    4. DESCRIPTION String=> A description of the property. This will typically contain information as to where this property is stored in the database.
    The ResultSet is sorted by the NAME column
    Specified by:
    
    getClientInfoProperties in interface DatabaseMetaData
    
    Returns:
    A ResultSet object; each row is a supported client info property
    
    Throws:
    
    SQLException - if a database access error occurs
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    Description copied from interface: java.sql.Wrapper
    
    Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.
    
    Specified by:
    
    isWrapperFor in interface Wrapper
    
    Parameters:
    iface - a Class defining an interface.
    
    Returns:
    true if this implements the interface or directly or indirectly wraps an object that does.
    
    Throws:
    
    SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.
  - unwrap
```
public <T> T unwrap(Class<T> iface)
         throws SQLException
```
    Description copied from interface: java.sql.Wrapper
    
    Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.
    
    Specified by:
    
    unwrap in interface Wrapper
    
    Parameters:
    iface - A Class defining an interface that the result must implement.
    
    Returns:
    an object that implements the interface. May be a proxy for the actual implementing object.
    
    Throws:
    
    SQLException - If no object found that implements the interface
  - getFunctions
```
public ResultSet getFunctions(String catalog,
                     String schemaPattern,
                     String functionNamePattern)
                       throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the system and user functions available in the given catalog.
    Only system and user function descriptions matching the schema and function name criteria are returned. They are ordered by FUNCTION_CAT, FUNCTION_SCHEM, FUNCTION_NAME and SPECIFIC_ NAME.
    Each function description has the the following columns:
    1. FUNCTION_CAT String => function catalog (may be null)
    2. FUNCTION_SCHEM String => function schema (may be null)
    3. FUNCTION_NAME String => function name. This is the name used to invoke the function
    4. REMARKS String => explanatory comment on the function
    5. FUNCTION_TYPE short => kind of function:
      
      functionResultUnknown - Cannot determine if a return value or table will be returned
      functionNoTable- Does not return a table
      functionReturnsTable - Returns a table
    6. SPECIFIC_NAME String => the name which uniquely identifies this function within its schema. This is a user specified, or DBMS generated, name that may be different then the FUNCTION_NAME for example with overload functions
    A user may not have permission to execute any of the functions that are returned by getFunctions
    Specified by:
    
    getFunctions in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    functionNamePattern - a function name pattern; must match the function name as it is stored in the database
    
    Returns:
    ResultSet - each row is a function description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getFunctionColumns
```
public ResultSet getFunctionColumns(String catalog,
                           String schemaPattern,
                           String functionNamePattern,
                           String columnNamePattern)
                             throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the given catalog's system or user function parameters and return type.
    Only descriptions matching the schema, function and parameter name criteria are returned. They are ordered by FUNCTION_CAT, FUNCTION_SCHEM, FUNCTION_NAME and SPECIFIC_ NAME. Within this, the return value, if any, is first. Next are the parameter descriptions in call order. The column descriptions follow in column number order.
    Each row in the ResultSet is a parameter description, column description or return type description with the following fields:
    1. FUNCTION_CAT String => function catalog (may be null)
    2. FUNCTION_SCHEM String => function schema (may be null)
    3. FUNCTION_NAME String => function name. This is the name used to invoke the function
    4. COLUMN_NAME String => column/parameter name
    5. COLUMN_TYPE Short => kind of column/parameter:
      
      functionColumnUnknown - nobody knows
      functionColumnIn - IN parameter
      functionColumnInOut - INOUT parameter
      functionColumnOut - OUT parameter
      functionColumnReturn - function return value
      functionColumnResult - Indicates that the parameter or column is a column in the ResultSet
    6. DATA_TYPE int => SQL type from java.sql.Types
    7. TYPE_NAME String => SQL type name, for a UDT type the type name is fully qualified
    8. PRECISION int => precision
    9. LENGTH int => length in bytes of data
    10. SCALE short => scale - null is returned for data types where SCALE is not applicable.
    11. RADIX short => radix
    12. NULLABLE short => can it contain NULL.
      
      functionNoNulls - does not allow NULL values
      functionNullable - allows NULL values
      functionNullableUnknown - nullability unknown
    13. REMARKS String => comment describing column/parameter
    14. CHAR_OCTET_LENGTH int => the maximum length of binary and character based parameters or columns. For any other datatype the returned value is a NULL
    15. ORDINAL_POSITION int => the ordinal position, starting from 1, for the input and output parameters. A value of 0 is returned if this row describes the function's return value. For result set columns, it is the ordinal position of the column in the result set starting from 1.
    16. IS_NULLABLE String => ISO rules are used to determine the nullability for a parameter or column.
      
      YES --- if the parameter or column can include NULLs
      NO --- if the parameter or column cannot include NULLs
      empty string --- if the nullability for the parameter or column is unknown
    17. SPECIFIC_NAME String => the name which uniquely identifies this function within its schema. This is a user specified, or DBMS generated, name that may be different then the FUNCTION_NAME for example with overload functions
    The PRECISION column represents the specified column size for the given parameter or column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getFunctionColumns in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    functionNamePattern - a procedure name pattern; must match the function name as it is stored in the database
    columnNamePattern - a parameter name pattern; must match the parameter or column name as it is stored in the database
    
    Returns:
    ResultSet - each row describes a user function parameter, column or return type
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getPseudoColumns
```
public ResultSet getPseudoColumns(String catalog,
                         String schemaPattern,
                         String tableNamePattern,
                         String columnNamePattern)
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the pseudo or hidden columns available in a given table within the specified catalog and schema. Pseudo or hidden columns may not always be stored within a table and are not visible in a ResultSet unless they are specified in the query's outermost SELECT list. Pseudo or hidden columns may not necessarily be able to be modified. If there are no pseudo or hidden columns, an empty ResultSet is returned.
    Only column descriptions matching the catalog, schema, table and column name criteria are returned. They are ordered by TABLE_CAT,TABLE_SCHEM, TABLE_NAME and COLUMN_NAME.
    Each column description has the following columns:
    1. TABLE_CAT String => table catalog (may be null)
    2. TABLE_SCHEM String => table schema (may be null)
    3. TABLE_NAME String => table name
    4. COLUMN_NAME String => column name
    5. DATA_TYPE int => SQL type from java.sql.Types
    6. COLUMN_SIZE int => column size.
    7. DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where DECIMAL_DIGITS is not applicable.
    8. NUM_PREC_RADIX int => Radix (typically either 10 or 2)
    9. COLUMN_USAGE String => The allowed usage for the column. The value returned will correspond to the enum name returned by PseudoColumnUsage.name()
    10. REMARKS String => comment describing column (may be null)
    11. CHAR_OCTET_LENGTH int => for char types the maximum number of bytes in the column
    12. IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
      
      YES --- if the column can include NULLs
      NO --- if the column cannot include NULLs
      empty string --- if the nullability for the column is unknown
    The COLUMN_SIZE column specifies the column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
    Specified by:
    
    getPseudoColumns in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    tableNamePattern - a table name pattern; must match the table name as it is stored in the database
    columnNamePattern - a column name pattern; must match the column name as it is stored in the database
    
    Returns:
    ResultSet - each row is a column description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    PseudoColumnUsage
  - generatedKeyAlwaysReturned
```
public boolean generatedKeyAlwaysReturned()
                                   throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether a generated key will always be returned if the column name(s) or index(es) specified for the auto generated key column(s) are valid and the statement succeeds. The key that is returned may or may not be based on the column(s) for the auto generated key. Consult your JDBC driver documentation for additional details.
    
    Specified by:
    
    generatedKeyAlwaysReturned in interface DatabaseMetaData
    
    Returns:
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsSavepoints
```
public boolean supportsSavepoints()
                           throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports savepoints.
    
    Specified by:
    
    supportsSavepoints in interface DatabaseMetaData
    
    Returns:
    true if savepoints are supported; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsNamedParameters
```
public boolean supportsNamedParameters()
                                throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports named parameters to callable statements.
    
    Specified by:
    
    supportsNamedParameters in interface DatabaseMetaData
    
    Returns:
    true if named parameters are supported; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - supportsMultipleOpenResults
```
public boolean supportsMultipleOpenResults()
                                    throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether it is possible to have multiple ResultSet objects returned from a CallableStatement object simultaneously.
    
    Specified by:
    
    supportsMultipleOpenResults in interface DatabaseMetaData
    
    Returns:
    true if a CallableStatement object can return multiple ResultSet objects simultaneously; false otherwise
    
    Throws:
    
    SQLException - if a datanase access error occurs
  - supportsGetGeneratedKeys
```
public boolean supportsGetGeneratedKeys()
                                 throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether auto-generated keys can be retrieved after a statement has been executed
    
    Specified by:
    
    supportsGetGeneratedKeys in interface DatabaseMetaData
    
    Returns:
    true if auto-generated keys can be retrieved after a statement has executed; false otherwise
    If true is returned, the JDBC driver must support the returning of auto-generated keys for at least SQL INSERT statements
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSuperTypes
```
public ResultSet getSuperTypes(String catalog,
                      String schemaPattern,
                      String typeNamePattern)
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the user-defined type (UDT) hierarchies defined in a particular schema in this database. Only the immediate super type/ sub type relationship is modeled.
    Only supertype information for UDTs matching the catalog, schema, and type name is returned. The type name parameter may be a fully-qualified name. When the UDT name supplied is a fully-qualified name, the catalog and schemaPattern parameters are ignored.
    If a UDT does not have a direct super type, it is not listed here. A row of the ResultSet object returned by this method describes the designated UDT and a direct supertype. A row has the following columns:
    1. TYPE_CAT String => the UDT's catalog (may be null)
    2. TYPE_SCHEM String => UDT's schema (may be null)
    3. TYPE_NAME String => type name of the UDT
    4. SUPERTYPE_CAT String => the direct super type's catalog (may be null)
    5. SUPERTYPE_SCHEM String => the direct super type's schema (may be null)
    6. SUPERTYPE_NAME String => the direct super type's name
    Note: If the driver does not support type hierarchies, an empty result set is returned.
    Specified by:
    
    getSuperTypes in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
    schemaPattern - a schema name pattern; "" retrieves those without a schema
    typeNamePattern - a UDT name pattern; may be a fully-qualified name
    
    Returns:
    a ResultSet object in which a row gives information about the designated UDT
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getSuperTables
```
public ResultSet getSuperTables(String catalog,
                       String schemaPattern,
                       String tableNamePattern)
                         throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the table hierarchies defined in a particular schema in this database.
    Only supertable information for tables matching the catalog, schema and table name are returned. The table name parameter may be a fully- qualified name, in which case, the catalog and schemaPattern parameters are ignored. If a table does not have a super table, it is not listed here. Supertables have to be defined in the same catalog and schema as the sub tables. Therefore, the type description does not need to include this information for the supertable.
    Each type description has the following columns:
    1. TABLE_CAT String => the type's catalog (may be null)
    2. TABLE_SCHEM String => type's schema (may be null)
    3. TABLE_NAME String => type name
    4. SUPERTABLE_NAME String => the direct super type's name
    Note: If the driver does not support type hierarchies, an empty result set is returned.
    Specified by:
    
    getSuperTables in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
    schemaPattern - a schema name pattern; "" retrieves those without a schema
    tableNamePattern - a table name pattern; may be a fully-qualified name
    
    Returns:
    a ResultSet object in which each row is a type description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - getAttributes
```
public ResultSet getAttributes(String catalog,
                      String schemaPattern,
                      String typeNamePattern,
                      String attributeNamePattern)
                        throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    Retrieves a description of the given attribute of the given type for a user-defined type (UDT) that is available in the given schema and catalog.
    Descriptions are returned only for attributes of UDTs matching the catalog, schema, type, and attribute name criteria. They are ordered by TYPE_CAT, TYPE_SCHEM, TYPE_NAME and ORDINAL_POSITION. This description does not contain inherited attributes.
    The ResultSet object that is returned has the following columns:
    1. TYPE_CAT String => type catalog (may be null)
    2. TYPE_SCHEM String => type schema (may be null)
    3. TYPE_NAME String => type name
    4. ATTR_NAME String => attribute name
    5. DATA_TYPE int => attribute type SQL type from java.sql.Types
    6. ATTR_TYPE_NAME String => Data source dependent type name. For a UDT, the type name is fully qualified. For a REF, the type name is fully qualified and represents the target type of the reference type.
    7. ATTR_SIZE int => column size. For char or date types this is the maximum number of characters; for numeric or decimal types this is precision.
    8. DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where DECIMAL_DIGITS is not applicable.
    9. NUM_PREC_RADIX int => Radix (typically either 10 or 2)
    10. NULLABLE int => whether NULL is allowed
      
      attributeNoNulls - might not allow NULL values
      attributeNullable - definitely allows NULL values
      attributeNullableUnknown - nullability unknown
    11. REMARKS String => comment describing column (may be null)
    12. ATTR_DEF String => default value (may be null)
    13. SQL_DATA_TYPE int => unused
    14. SQL_DATETIME_SUB int => unused
    15. CHAR_OCTET_LENGTH int => for char types the maximum number of bytes in the column
    16. ORDINAL_POSITION int => index of the attribute in the UDT (starting at 1)
    17. IS_NULLABLE String => ISO rules are used to determine the nullability for a attribute.
      
      YES --- if the attribute can include NULLs
      NO --- if the attribute cannot include NULLs
      empty string --- if the nullability for the attribute is unknown
    18. SCOPE_CATALOG String => catalog of table that is the scope of a reference attribute (null if DATA_TYPE isn't REF)
    19. SCOPE_SCHEMA String => schema of table that is the scope of a reference attribute (null if DATA_TYPE isn't REF)
    20. SCOPE_TABLE String => table name that is the scope of a reference attribute (null if the DATA_TYPE isn't REF)
    21. SOURCE_DATA_TYPE short => source type of a distinct type or user-generated Ref type,SQL type from java.sql.Types (null if DATA_TYPE isn't DISTINCT or user-generated REF)
    Specified by:
    
    getAttributes in interface DatabaseMetaData
    
    Parameters:
    catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
    schemaPattern - a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
    typeNamePattern - a type name pattern; must match the type name as it is stored in the database
    attributeNamePattern - an attribute name pattern; must match the attribute name as it is declared in the database
    
    Returns:
    a ResultSet object in which each row is an attribute description
    
    Throws:
    
    SQLException - if a database access error occurs
    See Also:
    DatabaseMetaData.getSearchStringEscape()
  - supportsResultSetHoldability
```
public boolean supportsResultSetHoldability(int holdability)
                                     throws SQLException
```
    Description copied from interface: java.sql.DatabaseMetaData
    
    Retrieves whether this database supports the given result set holdability.
    
    Specified by:
    
    supportsResultSetHoldability in interface DatabaseMetaData
    
    Parameters:
    holdability - one of the following constants: ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT
    Returns: true if so; false otherwise Throws: SQLException - if a database access error occurs See Also: Connection
  getResultSetHoldability public int getResultSetHoldability() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Retrieves this database's default holdability for ResultSet objects. Specified by: getResultSetHoldability in interface DatabaseMetaData Returns: the default holdability; either ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT Throws: SQLException - if a database access error occurs getDatabaseMajorVersion public int getDatabaseMajorVersion() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Retrieves the major version number of the underlying database. Specified by: getDatabaseMajorVersion in interface DatabaseMetaData Returns: the underlying database's major version Throws: SQLException - if a database access error occurs getDatabaseMinorVersion public int getDatabaseMinorVersion() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Retrieves the minor version number of the underlying database. Specified by: getDatabaseMinorVersion in interface DatabaseMetaData Returns: underlying database's minor version Throws: SQLException - if a database access error occurs getJDBCMajorVersion public int getJDBCMajorVersion() Description copied from interface: java.sql.DatabaseMetaData Retrieves the major JDBC version number for this driver. Specified by: getJDBCMajorVersion in interface DatabaseMetaData Returns: JDBC version major number getJDBCMinorVersion public int getJDBCMinorVersion() Description copied from interface: java.sql.DatabaseMetaData Retrieves the minor JDBC version number for this driver. Specified by: getJDBCMinorVersion in interface DatabaseMetaData Returns: JDBC version minor number getSQLStateType public int getSQLStateType() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Indicates whether the SQLSTATE returned by SQLException.getSQLState is X/Open (now known as Open Group) SQL CLI or SQL:2003. Specified by: getSQLStateType in interface DatabaseMetaData Returns: the type of SQLSTATE; one of: sqlStateXOpen or sqlStateSQL Throws: SQLException - if a database access error occurs locatorsUpdateCopy public boolean locatorsUpdateCopy() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Indicates whether updates made to a LOB are made on a copy or directly to the LOB. Specified by: locatorsUpdateCopy in interface DatabaseMetaData Returns: true if updates are made to a copy of the LOB; false if updates are made directly to the LOB Throws: SQLException - if a database access error occurs supportsStatementPooling public boolean supportsStatementPooling() throws SQLException Description copied from interface: java.sql.DatabaseMetaData Retrieves whether this database supports statement pooling. Specified by: supportsStatementPooling in interface DatabaseMetaData Returns: true if so; false otherwise Throws: SQLException - if a database access error occurs

Class PgDatabaseMetaData

Field Summary

Fields inherited from interface java.sql.DatabaseMetaData

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

connection

Constructor Detail

PgDatabaseMetaData

Method Detail

getMaxIndexKeys

getMaxNameLength

allProceduresAreCallable

allTablesAreSelectable

getURL

getUserName

isReadOnly

nullsAreSortedHigh

nullsAreSortedLow

nullsAreSortedAtStart

nullsAreSortedAtEnd

getDatabaseProductName

getDatabaseProductVersion

getDriverName

getDriverVersion

getDriverMajorVersion

getDriverMinorVersion

usesLocalFiles

usesLocalFilePerTable

supportsMixedCaseIdentifiers

storesUpperCaseIdentifiers

storesLowerCaseIdentifiers

storesMixedCaseIdentifiers

supportsMixedCaseQuotedIdentifiers

storesUpperCaseQuotedIdentifiers

storesLowerCaseQuotedIdentifiers

storesMixedCaseQuotedIdentifiers

getIdentifierQuoteString

getSQLKeywords

getNumericFunctions

getStringFunctions

getSystemFunctions

getTimeDateFunctions

getSearchStringEscape

getExtraNameCharacters

supportsAlterTableWithAddColumn

supportsAlterTableWithDropColumn

supportsColumnAliasing

nullPlusNonNullIsNull

supportsConvert

supportsConvert

supportsTableCorrelationNames

supportsDifferentTableCorrelationNames

supportsExpressionsInOrderBy

supportsOrderByUnrelated

supportsGroupBy

supportsGroupByUnrelated

supportsGroupByBeyondSelect

supportsLikeEscapeClause

supportsMultipleResultSets

supportsMultipleTransactions

supportsNonNullableColumns

supportsMinimumSQLGrammar

supportsCoreSQLGrammar

supportsExtendedSQLGrammar

supportsANSI92EntryLevelSQL

supportsANSI92IntermediateSQL

supportsANSI92FullSQL

supportsIntegrityEnhancementFacility

supportsOuterJoins

supportsFullOuterJoins

supportsLimitedOuterJoins

getSchemaTerm

getProcedureTerm

getCatalogTerm

isCatalogAtStart

getCatalogSeparator

supportsSchemasInDataManipulation

supportsSchemasInProcedureCalls