If the referential integrity delete rule between two relations is restrict, an attempt to delete a record on the "many side" of the one-to-many will be rejected if of one or more records in the relation on the "one side" of the relationship has the corresponding key value.

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The restrict delete rule applies when attempting to delete a record on the "one side" of a one-to-many relationship. It prevents the deletion if there are corresponding records on the "many side" that reference the record being deleted.

If the Referential Integrity Delete Rule Between Two Relations Is