Cascading update in DBMS
What do you understand by the term cascading update in DBMS?
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Referential integrity constraints need that foreign key values in one table correspond to primary key values in any other. When the value of the primary key is altered – i.e., updated -- the value of the foreign key must instantly be changed to match it. Cascading updates will setup this alter to be done automatically by the DBMS when essential.
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