What is a cascading updatereferential integrity constraints, Ask an Expert

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What is a cascading update?

Referential integrity constraints needs that foreign key values in one table correspond to primary key values in another. If the value of the primary key is altered -- that is, updated -- the value of the foreign key must directly be changed to match it. Cascading updates will set this alter to be done automatically by the DBMS whenever essential.

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Category:- DBMS
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