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MCQ 41: The exist construct returns true as a value, if the argument subquery is
MCQ 42: The preface that converts the DML statements to normal procedure calls in the host language, is known as
MCQ 43: If any of the input values is null, the result of an arithmetic expression, would be
MCQ 44: Mapping cardinalities are useful in describing
MCQ 45: The problem of being unable to represent some information, can be solved by introducing
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