Transformation of Relational Expressions MCQs & Quiz Online PDF Book Download

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Learn query optimization test MCQs: operations of natural-join are, with choices commutative, associative, distributive, and conjunctive for online masters degree data science. Practice assessment test for scholarships, online learning transformation of relational expressions quiz questions for competitive assessment in computer science major for data analytics certification.

MCQ on Transformation of Relational Expressions Quiz Book Download

MCQ: Operations of Natural-join are

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

B

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

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

A

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

B

MCQ: Operations of theta-join are

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

C

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

C