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Ideally,an entity identifier is composed of ____ attribute(s) .
Q7: Oracle uses the _ function to extract
Q8: A _ is a logically connected set
Q28: The existence of a mandatory relationship indicates
Q37: DBMSs use indexes for many different purposes.
Q38: A _ is a query (SELECT statement)inside
Q42: Corporations use only structured data.
Q52: Describe a conceptual model and its advantages.What
Q57: Surrogate primary keys are especially helpful when
Q59: Specialization is based on grouping _ characteristics
Q69: How does an automated teller machine aid