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Database Systems Certification MCQs – Practice Test 3 (Chapter 18)

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Query Processing Quiz – Practice Test 3 PDF Download

MCQ 11: The A8 algorithm uses the selection of:

  1. Disjunction condition
  2. Negation condition
  3. Conjunction condition
  4. Composite condition

MCQ 12: The A5 search algorithm uses a:

  1. Primary index
  2. Secondary index
  3. Ordered index
  4. Clustered index

MCQ 13: The lowest-level operator in query-processing to access data, is:

  1. Pointers
  2. Locators
  3. Indices
  4. File scan

MCQ 14: A3 search performs retrieval of multiple records by using a primary index specifying the:

  1. Equality comparison on a key attribute
  2. Inequality comparison on a nonkey attribute
  3. Equality comparison on a nonkey attribute
  4. Inequality comparison on a key attribute

MCQ 15: Sorting of relations that do not fit in memory is called:

  1. Internal sorting
  2. External sorting
  3. Runnable sorting
  4. Repeated sorting

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