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Database Systems MCQs – Practice Test 6 (Chapter 18)

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Query Processing MCQ – Practice Test 6 PDF Download

MCQ 26: Sorting in database systems is important because of major reasons of type:

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

MCQ 27: A sequence of primitive operations that can be used to evaluate a query is a:

  1. Query-execution plan
  2. Query-evaluation plan
  3. Both A and B
  4. Query-execution engine

MCQ 28: After the query plan is chosen, the query is:

  1. Executed
  2. Evaluated
  3. Interpreted
  4. Implemented

MCQ 29: The algorithm used to compute natural joins and equi-joins are called:

  1. Join algorithms
  2. Split-join algorithms
  3. Merge-join algorithms
  4. Union-join algorithms

MCQ 30: Index structures are referred to as:

  1. Index scans
  2. Access paths
  3. Nature of operation
  4. Seek paths

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