MDAC 2.5 SDK - OLE DB Programmer's Reference
Chapter 11: Integrated Indexes
With nonintegrated indexes, the range on the base table rowset used by IRowset::GetNextRows, IRowsetLocate::GetRowsAt, and IRowsetScroll::GetRowsAtRatio was always the entire rowset. In a rowset with an integrated index, this can be changed by IRowsetIndex::SetRange. This is the same as the SetRange functionality on nonintegrated index rowsets.