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Database Systems Certification MCQs – Practice Test 3 (Chapter 10)

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Formal Relational Query Languages Quiz PDF Download – Practice Test 3

MCQ 11: The Cartesian product operation concatenates the:

  1. Tuples of the two relations
  2. Instances of the two relations
  3. Attributes of the two relations
  4. Renames of the two relations

MCQ 12: The outer join basically have forms of operation of:

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

MCQ 13: The operation that works like assignment in a programming language, is said to be:

  1. Union operator
  2. Assignment operator
  3. Natural join operator
  4. Set difference operator

MCQ 14: A natural join allows combination of certain selections and a Cartesian product into:

  1. One operation
  2. Two operations
  3. Multiple operations
  4. No order operation

MCQ 15: The expression r -s represents a:

  1. Arity
  2. Unity
  3. Projection
  4. Set-difference

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