1.

What Are The Referential Actions Supported By Foreign Key Integrity Constraint ?

Answer»

UPDATE and DELETE Restrict - A REFERENTIAL integrity RULE that DISALLOWS the update or deletion of referenced data.
DELETE Cascade - When a referenced row is deleted all associated dependent ROWS are deleted.

UPDATE and DELETE Restrict - A referential integrity rule that disallows the update or deletion of referenced data.
DELETE Cascade - When a referenced row is deleted all associated dependent rows are deleted.



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