File restoration can be achieved through backup copies of a file,audit trails,and row image files.
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Q36: Denormalization is the process of splitting or
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Q38: A transitive dependency is an integrity constraint
Q39: A default value is a value a
Q40: A null value is used to represent
Q42: During physical design,you consider:
A)the definitions of each
Q43: Which of the following is not a
Q44: Multiple key retrieval is possible with the
Q45: The following are steps to transforming an
Q46: During logical database design,the work of all
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