What is the functions of on delete cascade?

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answerhappygod
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What is the functions of on delete cascade?

Post by answerhappygod »

a) It is used to delete a tuple in a table
b) It is used to specify the precise attribute that needs to be deleted in a single relation.
c) It is used to preserve referential integrity in a relation
d) It is used to execute sub-queries in the from clause.
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