Transformation of Relational Expressions MCQs & Quiz Online PDF Book Download

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MCQ on Transformation of Relational Expressions Quiz Book Download

MCQ: Operations of Natural-join are

  1. Commutative
  2. Associative
  3. Distributive
  4. Conjunctive


MCQ: Optimizer that explores space of all query-evaluation plans is called

  1. Cost-based
  2. Plan-based
  3. Estimate-based
  4. Count-based


MCQ: Process of replacement of a nested query by a query with a join is called

  1. Correlation
  2. Decorrelation
  3. Materialization
  4. Non-materialization


MCQ: Operations of theta-join are

  1. Distributive
  2. Conjunctive
  3. Commutative
  4. Associative


MCQ: Two expressions generate same set of tuples on every legal database instance, relational expressions are said to be

  1. Dependant
  2. Independent
  3. Equivalent
  4. Non-equivalent