One or more references to other Activities that must reach the FINISHED state before this activity will start.
The ID of the object, IDs must be unique within a pipeline definition
The ID of the object, IDs must be unique within a pipeline definition
The optional, user-defined label of the object.
The optional, user-defined label of the object. If you do not provide a name for an object in a pipeline definition, AWS Data Pipeline automatically duplicates the value of id.
The computational resource to run the activity or command.
The computational resource to run the activity or command. For example, an Amazon EC2 instance or Amazon EMR cluster.
The type of object.
The type of object. Use one of the predefined AWS Data Pipeline object types.
AWS Data Pipeline activity objects.
ref: http://docs.aws.amazon.com/datapipeline/latest/DeveloperGuide/dp-object-activities.html