Database Redesign
Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign.

optimistic
None of these
ambivalent
skeptical

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Database Redesign
Which is not true of a correlated subquery?

EXISTS/NOT EXISTS is a form of a correlated subquery.
They can be used to verify functional dependencies.
They are very similar to a regular subquery.
The processing of the SELECT statements is nested.

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