MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Column
Property set: DBPROPSET_COLUMN
Type: VT_BOOL
Typical R/W: R/W
Description: Primary Key
Indicates whether the column is part of the primary key.
| Value | Meaning |
| VARIANT_TRUE | The column is part of the primary key of the table. |
| VARIANT_FALSE | The column is not part of the primary key of the table. |