Even if an organization has a very large database,it will be possible to make a complete backup copy of the operational database prior to making structure changes.
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Q22: A means must be created to recover
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Q36: A double nested set of NOT EXISTS
Q37: The design produced by reverse engineering may
Q39: The data model produced by reverse engineering
Q42: In a correlated subquery of a database
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Q49: Converting date,money,or other more specific data types
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Q59: To change the minimum cardinality on the
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