Session Object Interfaces

The following table shows the mandatory and optional interfaces defined by OLE DB for a session object.

Interface	Required?	Implemented by OLE DB templates?
IGetDataSource	Mandatory	Yes
IOpenRowset	Mandatory	Yes
ISessionProperties	Mandatory	Yes
IAlterIndex	Optional	No
IAlterTable	Optional	No
IBindResource	Optional	No
ICreateRow	Optional	No
IDBCreateCommand	Optional	Yes
IDBSchemaRowset	Optional	Yes
IIndexDefinition	Optional	No
ISupportErrorInfo	Optional	Yes
ITableCreation	Optional	No
ITableDefinition	Optional	No
ITableDefinitionWithConstraints	Optional	No
ITransaction	Optional	No
ITransactionJoin	Optional	No
ITransactionLocal	Optional	No
ITransactionObject	Optional	No

The session object creates a rowset object. If the provider supports commands, the session also creates a command object (CCommand, implementing the OLE DB TCommand). The command object implements the ICommand interface and uses the ICommand::Execute method to execute commands on the rowset, as shown in the following figure.

See Also

Concepts

The OLE DB Provider Template Architecture