Question
What is the value of the following expression: (A - B = {}) (A B) A. False (regardless of how A and B are defined)
What is the value of the following expression:
(A - B = {}) (A B)
A. False (regardless of how A and B are defined)
B. True (regardless of how A and B are defined)
C. depends on how sets A and B are defined
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Learning PostgreSQL
Authors: Salahaldin Juba, Achim Vannahme, Andrey Volkov
1st Edition
178398919X, 9781783989195
