Chapter 2: Data Source and Session Objects

OLE DB Programmer's Reference

Two types of COM objects are necessary for consumers to connect to providers: data source objects and session objects.

To connect to an OLE DB provider, a consumer must first create and initialize an instance of the provider's data source object. This data source object can then be used to create a session object, which in turn acts as a factory for transactions, commands, and rowsets. The primary function of a session is to define a transaction. A transaction is a mechanism used to define persistent units of work within a provider and to define how the different units relate to one another in a system with parallel activities.

For more information on	Go to
Data providers, consumers, and service components	"Conceptual Programming Models in OLE DB" in Chapter 1: Overview of OLE DB
Transactions	Chapter 15: Transactions
OLE DB connection models	"Rowset Programming and Object Model" and "Binder Programming and Object Model" in Chapter 1: Overview of OLE DB
Data source object	"Data Source Objects" in this chapter
Session	"Session Objects" in this chapter
Rowsets	Chapter 4: Rowsets

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