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Database Systems Exam MCQs – Practice Test 12 (Chapter 10)

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Formal Relational Query Languages MCQs – Practice Test 12 PDF Download

MCQ 56: In the relational algebra, the basic expression category consists of:

  1. 2 types
  2. 3 types
  3. 4 types
  4. 5 types

MCQ 57: The operation that takes both the left and right outer join operations, is known as:

  1. Whole outer join
  2. Full outer join
  3. Natural outer join
  4. Combination outer join

MCQ 58: In a selection statement, the predicate appears as a subscript to:

  1. epsilon
  2. zeta
  3. sigma
  4. delta

MCQ 59: Multisets collections follows the order in which the values appear is:

  1. Relevant
  2. Integrated
  3. Not relevant
  4. Non Integrated

MCQ 60: The operation that permits to find tuples that are in one relation but not in another, is said to be:

  1. Union
  2. Set difference
  3. Projection
  4. Selection

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