Difference between revisions of "SYSEXPORTEDKEYS"

Revision as of 14:33, 18 January 2013

Description of the foreign key columns that reference the primary key columns

System Tables are system defined read-only tables. You can query these tables using the SELECT statement.

Column	Data Type	Width	Description
PKTABLE_CAT	C	30	Primary key table catalog
PKTABLE_SCHEM	C	30	Primary key table schema
PKTABLE_NAME	C	30	Primary key table name
PKCOLUMN_NAME	C	30	Primary key column name
FKTABLE_CAT	C	30	Foreign key table catalog being exported
FKTABLE_SCHEM	C	30	Foreign key table schema being exported
FKTABLE_NAME	C	30	Foreign key table name being exported
FKCOLUMN_NAME	C	30	Foreign key column name being exported
KEY_SEQ	N	2	Sequence number within foreign key
UPDATE_RULE	N	2	What happens to foreign key when primary is updated
DELETE_RULE	N	2	What happens to the foreign key when primary is deleted
FK_NAME	C	30	Foreign key name
PK_NAME	C	30	Primary key name
DEFERRABILITY	N	2	Can the evaluation of foreign key constraints be deferred until commit?

SELECT * FROM sysexportedkeys

@@ Line 31: / Line 31: @@
 |valign="top"|UPDATE_RULE||N||2||What happens to foreign key when primary is updated
 |-
-|valign="top"|DELETE_RULE||N||2||What happens to the foreign key when primary is deleted
+|valign="top"|DELETE_RULE||valign="top"|N||valign="top"|2||What happens to the foreign key when primary is deleted
 |-
 |valign="top"|FK_NAME||valign="top"|C||valign="top"|30||Foreign key name
@@ Line 37: / Line 37: @@
 |valign="top"|PK_NAME||valign="top"|C||valign="top"|30||Primary key name
 |-
-|valign="top"|DEFERRABILITY||N||2||Can the evaluation of foreign key constraints be deferred until commit?
+|valign="top"|DEFERRABILITY||valign="top"|N||valign="top"|2||Can the evaluation of foreign key constraints be deferred until commit?
 |-
 |}