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Database Systems Entrance Exam MCQs – Mock Test 165

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Free Nested Subqueries Quiz App Download: In a set, the NOT IN connective tests for the; MCQ with answers: absence of set differences, set differences, absence of set membership, and data set membership. Study Introduction to SQL Questions and Answers, Apple iBook to download free chapter for database academic programs.

Nested Subqueries Quiz – Mock Test 165 PDF Download

MCQ 821: In a set, the NOT IN connective tests for the:

  1. Set differences
  2. Absence of set differences
  3. Data set membership
  4. Absence of set membership

MCQ 822: Users describe the kinds of operations that will be performed on the data, on the specification of:

  1. Data Requirements
  2. Data Gathering
  3. Procedural Requirements
  4. Functional requirements

MCQ 823: To count the number of tuples in a relation, the aggregate function to be used is:

  1. Avg
  2. Min
  3. Count
  4. Sum

MCQ 824: A special case of multisets, which have only one copy of each element, is known to be:

  1. Sets
  2. Elements
  3. Associator
  4. Aggregator

MCQ 825: In entity relationship model, the basic objects are known as:

  1. Instances
  2. Entries
  3. Nodes
  4. Entities

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