MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties

DBPROP_IAccessor

Property group: Rowset, View

Property set: DBPROPSET_ROWSET, DBPROPSET_VIEW

Column? N

Type: VT_BOOL

Typical R/W: R

Description: IAccessor

The value of this property is read-only and is always set to VARIANT_TRUE, indicating that the rowset supports the specified interface. The value of this property cannot be set to VARIANT_FALSE. (This is also true of DBPROP_IColumnsInfo, DBPROP_IConvertType, DBPROP_IRowset, and DBPROP_IRowsetInfo.) If the consumer does not set the value of this property to true, the resulting rowset supports IAccessor.

Note   Providers that support an interface must support the property associated with that interface with a value of VARIANT_TRUE. These properties are primarily used to request interfaces through ICommandProperties::SetProperties.