MDAC 2.5 SDK - OLE DB Programmer's Reference
Chapter 2: Data Source and Session Objects
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 and service components | "Consumers and Providers" in Chapter 1, "Overview of OLE DB" |
| Transactions | Chapter 15, "Transactions" |
| Consumers and providers | "Consumers and Providers" in Chapter 1, "Overview of OLE DB" |
| OLE DB connection model | "Data Source Objects, Session Objects, and Transaction Objects" 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" |