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Database Management System Exam MCQs – Practice Test 4 (Chapter 11)

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Relational Algebra & Calculus MCQs – Practice Test 4 PDF Download

MCQ 16: In the relational calculus, the variables are bounded with the help of:

  1. non-identifiers
  2. non-quantifiers
  3. quantifiers
  4. identifiers

MCQ 17: In unary relational operations, the symbols such as equal to, less than and greater than are classified as:

  1. tuple operators
  2. column operators
  3. comparison operators
  4. row operators

MCQ 18: The JOIN operation which uses any of the comparison operators is classified as:

  1. THETA JOIN
  2. CHI-JOIN
  3. PI-JOIN
  4. SIGMA-JOIN

MCQ 19: The kind of operation by which one tuple can be created with the help of combining tuples from two relations is classified as:

  1. square operation
  2. join operation
  3. division operation
  4. relation operation

MCQ 20: Consider two tuples X and Y, the operation whose result includes tuples that are only in X but not in Y is classified as:

  1. square of relation X and Y
  2. union of relation X and Y
  3. intersection of relation X and Y
  4. difference of relation X and Y

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