BranchDB (api 0.9.0 API)

Type Parameters:

K - Key type. K shall be String, byte array, Address, Byte, Short, Integer, Long, Character or BigInteger.

V - Value type. V shall be VarDB, DictDB, ArrayDB or BranchDB.
```
public interface BranchDB<K,V>
```
A branch DB is a hash from keys to sub-DBs.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  V at(K key)
  Returns sub-DB for the key.

- Method Detail
  - at
```
V at(K key)
```
    Returns sub-DB for the key.
    
    Parameters:
    
    key - key for sub-DB.
    
    Returns:
    
    sub-DB.