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Question 63Asked in BPSC TRE 1.0 (2023) Computer Science Class 11-12

Which of the following is not constraint in SQL?

  1. APrimary key
  2. BNot null
  3. CUnion
  4. DMore than one of the above
  5. ENone of the above
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Correct answer: (C) Union

Explanation

UNION is a set operator that combines the results of queries. PRIMARY KEY and NOT NULL are constraints.

From BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper

This is question 63 of BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.