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Database Systems Competitive Exam MCQs – Mock Test 139

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Advanced Aggregation Features MCQs – Mock Test 139 PDF Download

MCQ 691: Ranking operation is achieved over the partitions of the:

  1. Subprocesses
  2. Applications
  3. Data
  4. Recursions

MCQ 692: The operation that allows combination of information from any two relations, is known as:

  1. Selection
  2. Projection
  3. Exception
  4. Cartesian product

MCQ 693: All aggregate functions for their input collection, except count(*) ignore the:

  1. Strings
  2. Null value
  3. 0s
  4. 1s

MCQ 694: The term that says what actions to carry out under what conditions, is known as the:

  1. Data logic
  2. Business logic
  3. Computing logic
  4. File logic

MCQ 695: Advanced optimization techniques includes optimization of updates, multiquery optimization and:

  1. Top-K optimization
  2. Join minimization
  3. Parametric query optimization
  4. All of the Above

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