What is actions on referenced rows?

It refers to possible actions in response to the deletion of a referenced row or the update of the primary key of a referenced row. The possible actions are restrict (do not permit the action on the referenced row), cascade (perform the same action on the related rows), nullify (set the foreign key of related rows to null), and default (set the foreign key of related rows to a default value). See also referenced rows.

Tags: Database, Education, Software

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