TABLE 1: OLE DB Interfaces, Properties, and Schemas DTS Uses
DataSource	required property
IDBInitialize	required interface
IDBProperties	required interface
IDBCreateSession	required interface
ISessionProperties	required interface
IDBCreateCommand	optional interface, used to create tables, queries, etc.
IDBInfo	required interface
IOpenRowset	required interface
ICommandText	optional interface, used to create tables, queries, etc.
ICommandPrepare	optional interface, used to create tables, queries, etc.
IColumnsInfo	required interface
IRowset	required interface
IAccessor	required interface
ICommandWithParameters	optional, used for Data Driven Queries
IDBSchemaRowset	required interface
DBSCHEMA_PROVIDER_TYPES	required schema
DBSCHEMA_TABLES	optional schema
DBSCHEMA_CATALOGS	optional schema
DBSCHEMA_PRIMARY_KEYS	optional schema
DBSCHEMA_FOREIGN	optional schema
DBSCHEMA_INDEXES	optional schema
DBSCHEMA_TABLE_CONSTRAINTS	optional schema
DBSCHEMA_CHECK_CONSTRAINTS	optional schema