Question: Integrity constraint violations occur when an insert, update, or delete statement violates a primary key, foreign key, check, or unique constraint or a unique index.

Integrity constraint violations occur when an insert, update, or delete statement violates a primary key, foreign key, check, or unique constraint or a unique index. To include integrity constraint in a existing relation use:a

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Alter tableb. Modify tablec. Drop tabled. Create table

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