Writing an OLE DB Provider: An Introduction
The purpose of this section is to offer some general guidelines on how to construct an OLE DB data provider, using the OLE DB sample provider as an example.
OLE DB is based on the Component Object Model (COM). Developers must be familiar with this model as well as with basic object-oriented coding practices to create an OLE DB provider. Although many different implementations are possible, the sample provider implements the TDataSource, TDBSession, and TRowset CoTypes. The sample provider uses the IOpenRowset interface, which is a required interface on the session for all providers. IOpenRowset is used by consumers that need access to the full data set and do not need to specify selection criteria.
Developers should become familiar with data source objects, sessions, and rowsets, as well as general conventions and design considerations, by reading the OLE DB Programmer's Guide.
This section contains the following topics: