1. When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited.



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MCQ->When the parent entity is required and the parent has a surrogate key, update actions can be ignored.....
MCQ->Cascading updates refers to child rows being automatically deleted when a parent row is deleted.....
MCQ->When the parent entity is required, a new parent row can always be inserted.....
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