MDAC 2.5 SDK - OLE DB Providers
Cursor Service for OLE DB
The Refresh function updates the rowset with the most recent data available from the provider. The scope of the Refresh command could be a large data field, a row, a set of rows, or the entire rowset. To perform a refresh, the update service requires information about the base tables used to produce the rowset and about the base tables' primary keys.