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sys.foreign_keys (Transact-SQL)

Contains a row per object that is a FOREIGN KEY constraint, with sys.object.type = F.

Column name

Data type

Description

<Columns inherited from sys.objects>

 

For a list of columns that this view inherits, see sys.objects (Transact-SQL).

referenced_object_id

int

ID of the referenced object.

key_index_id

int

ID of the key index within the referenced object.

is_disabled

bit

FOREIGN KEY constraint is disabled.

is_not_for_replication

bit

FOREIGN KEY constraint was created by using the NOT FOR REPLICATION option.

is_not_trusted

bit

FOREIGN KEY constraint has not been verified by the system.

delete_referential_action

tinyint

The referential action that was declared for this FOREIGN KEY when a delete happens.

0 = No action

1 = Cascade

2 = Set null

3 = Set default

delete_referential_action_desc

nvarchar(60)

Description of the referential action that was declared for this FOREIGN KEY when a delete occurs:

NO_ACTION

CASCADE

SET_NULL

SET_DEFAULT

update_referential_action

tinyint

The referential action that was declared for this FOREIGN KEY when an update happens.

0 = No action

1 = Cascade

2 = Set null

3 = Set default

update_referential_action_desc

nvarchar(60)

Description of the referential action that was declared for this FOREIGN KEY when an update happens:

NO_ACTION

CASCADE

SET_NULL

SET_DEFAULT

is_system_named

bit

1 = Name was generated by the system.

0 = Name was supplied by the user.

In SQL Server 2005 and later versions, the visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.

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