Database Systems MCQs – Practice Test 6 (Chapter 15)
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MCQ 26: The Asterisk symbol '*' is used to denote all the attributes in a relation, and is used in:
MCQ 27: Performing all the tests before performing any deletion is:
MCQ 28: SQL standard says that the sum operator should ignore an input of:
MCQ 29: The groups that do not satisfy the having clause predicate are:
MCQ 30: Scalar subqueries can occur in:
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