Returns the columns used by referential constraints, unique constraints, check constraints, and assertions, defined in the catalog and owned by a given user.
Assembly: System.Data (in System.Data.dll)
maps to the OLE DB CONSTRAINT_COLUMN_USAGE rowset. Unless otherwise specified, restriction columns are returned in the following order.
CLR data type
Catalog name in which the table is defined. A null value if the provider does not support catalogs.
Unqualified schema name in which the table is defined. A null value if the provider does not support schemas.
Column name. This column, together with the COLUMN_GUID and COLUMN_PROPID columns, forms the column ID. One or more of these columns will be a null value, depending on which elements of the DBID structure the provider uses.
Catalog name. A null value if the provider does not support catalogs.
Unqualified schema name. A null value if the provider does not support schemas.
Available since 1.1