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MCQ 146: The aggregate function count of an empty collection is said to be
MCQ 147: Statement used for identification of embedded SQL requesting to the preprocessor, is
MCQ 148: The logical connectives i.e. and, or, and not are permitted by the SQL to be defined at the clause
MCQ 149: Indication of cascading revocation can be expressed through the keyword
MCQ 150: The symbol ?*? is used to denote all the attributes in a relation, and is defined in the clause
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