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Database Systems Study App Download | Nested Subqueries Apps (iOS & Android)

Database Systems MCQ: Complete Course

Nested Subqueries MCQ App Download & e-Book | 1368

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MCQ: 1368

We can write 'relation A contains relation B' as

  1. exists (B except A)
  2. exists (A except B)
  3. notexists (A except B)
  4. notexists (B except A)

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