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Database Systems MCQs – Certification Test 321

Specialization Trivia (Question 321) – Learning App & e-Book Download

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MCQ: 321

Specifying whether or not an entity in the superclass set must belong to at least one of subclass sets within specialization, by the constraint type

  1. Completeness constraint
  2. Disjointness constraint
  3. Overlapping constraint
  4. Existence constraint

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