OleDbSchemaGuid.Constraint_Column_Usage Field

Definition

Namespace:

System.Data.OleDb

Assembly:

System.Data.OleDb.dll

Package:

System.Data.OleDb v9.0.0

Source:

OleDbSchemaGuid.cs

Returns the columns used by referential constraints, unique constraints, check constraints, and assertions, defined in the catalog and owned by a given user.

public: static initonly Guid Constraint_Column_Usage;

public static readonly Guid Constraint_Column_Usage;

 staticval mutable Constraint_Column_Usage : Guid

Public Shared ReadOnly Constraint_Column_Usage As Guid 

Field Value

Guid

Remarks

Constraint_Column_Usage maps to the OLE DB CONSTRAINT_COLUMN_USAGE rowset. Unless otherwise specified, restriction columns are returned in the following order.

Restriction column	CLR data type	Description
TABLE_CATALOG	string	Catalog name in which the table is defined. A null value if the provider does not support catalogs.
TABLE_SCHEMA	string	Unqualified schema name in which the table is defined. A null value if the provider does not support schemas.
TABLE_NAME	string	Table name.
COLUMN_NAME	string	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.
CONSTRAINT_CATALOG	string	Catalog name. A null value if the provider does not support catalogs.
CONSTRAINT_SCHEMA	string	Unqualified schema name. A null value if the provider does not support schemas.
CONSTRAINT_NAME	string	Constraint name.