Can you explain referential integrity?



Can you explain referential integrity?..

Answer / Rajeev Arora

Referential integrity is a data constraint in database management systems that ensures the relationships between tables are maintained consistently. It prevents invalid or inconsistent data from being inserted, updated, or deleted within the database by enforcing rules on foreign key constraints. For example, a referential integrity constraint can ensure that a child table's foreign key always refers to an existing record in its parent table.

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