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Database Redesign

Database Redesign
A correlated subquery is processed as a nested subquery.

True
False

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Database Redesign
To drop a column that is used as a foreign key, first:

All of these
drop the table containing the foreign key.
drop the foreign key constraint.
drop the primary key.

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Database Redesign
A regular subquery is processed from the bottom up.

True
False

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Database Redesign
The EXISTS keyword will be true if any row in the subquery meets the condition.

False
True

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Database Redesign
A tool that can help designers understand the dependencies of database structures is a:

dependency graph.
None of these
graphical display.
data model.

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Database Redesign
Information systems and organizations do not just influence each other; they create each other.

False
True

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