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Free "Database Management System" App Download with MCQ: As compared to Cartesian product, the tuples which appears in the result by applying JOIN are the ones; with answers: that does not fulfill the condition, that fulfills the condition, that are nested, and that are subtracted for database performance optimization. Solve B Trees Indexing Quiz Questions, download Google e-Book (Free Chapter) to access digital resources.

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MCQ 21: As compared to Cartesian product, the tuples which appears in the result by applying JOIN are the ones:

  1. that fulfills the condition
  2. that does not fulfill the condition
  3. that are nested
  4. that are subtracted

MCQ 22: Consider two tuples R and S, the maximum size of R and S relations is divided to expected size of join is classified as:

  1. equi join selectivity
  2. natural selectivity
  3. join selectivity
  4. theta selectivity

MCQ 23: In the notation for query trees, the node which is used to terminate the execution is classified as:

  1. attribute nodes
  2. leaf nodes
  3. stem nodes
  4. root nodes

MCQ 24: The expression used in relational calculus to specify request of retrieval is classified as:

  1. declarative expression
  2. procedural expression
  3. structural expression
  4. functional expression

MCQ 25: The compatibility condition which states that the relations for union and intersection operations must consist of same type of tuples is classified as:

  1. union compatibility
  2. intersect compatibility
  3. row compatibility
  4. column compatibility

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