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The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is_______ false and unknown is _____ while unknown and unknown is _____ (a) Unknown, unknown, false (b) True, false, unknown (c) True, unknown, unknown (d) Unknown, false, unknown I have been asked this question in an online quiz. This intriguing question comes from Null Values Operations topic in section SQL : Queries, Constraints and Triggers of Database Management Select the correct answer from above options Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

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Correct choice is (d) Unknown, false, unknown The best explanation: None.

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