MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_I4
Typical R/W: R
Description: Structured Storage
A bitmask specifying what interfaces the rowset supports on storage objects. If a provider can support any of these interfaces, it is also required to support ISequentialStream. A combination of zero or more of the following: