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