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Database Systems MCQs – Mock Test 134

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Set Operations MCQs – Mock Test 134 PDF Download

MCQ 666: The operation that performs the set difference, is called:

  1. The Intersection Operation
  2. The Intersection all Operation
  3. The Except Operation
  4. The Union Operation

MCQ 667: Attributes from the fetched tuple are retrieved using methods whose names begin with:

  1. set
  2. get
  3. begin
  4. conn

MCQ 668: A single application can have several different versions of the layer known to be:

  1. Presentation layer
  2. Model layer
  3. Business-logic layer
  4. Data-access layer

MCQ 669: A single fetch request returns:

  1. One tuple only
  2. Multiple tuples
  3. One attribute only
  4. Multiple attributes

MCQ 670: The synonymously used term for Query language is:

  1. Data Definition Language
  2. Data declaration language
  3. Data manipulation language
  4. Data modification language

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