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Question 89Asked in BEL PE Computer Science, 20 Dec 2025 (5:00 PM)

Which statement about assertions in a relational database is true regarding data validity?

  1. AThey ensure only data type consistency.
  2. BThey are used only for referential integrity.
  3. CThey maintain data validity through complex or cross-table rules.
  4. DThey prevent duplicate primary keys.
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Correct answer: (C) They maintain data validity through complex or cross-table rules.

From BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM)

This is question 89 of BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM). 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.