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Database Systems Certification MCQs – Practice Test 11 (Chapter 18)

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Query Processing Quiz – Practice Test 11 PDF Download

MCQ 51: Several relational algebra operations can be grouped together into a:

  1. Sector
  2. Track
  3. Segment
  4. Pipeline

MCQ 52: The number of block transfers from disk and the number of disk seeks are used to estimate the cost of:

  1. Query-execution plan
  2. Query-evaluation plan
  3. Query-processing plan
  4. Query-implementing plan

MCQ 53: Pipelines can be executed in:

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

MCQ 54: Complex selection predicates are of types:

  1. 5
  2. 6
  3. 7
  4. 8

MCQ 55: The A8 algorithm uses the conjunctive selection with:

  1. One index
  2. Intersection of index
  3. Two index
  4. Composite index

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