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Database Redesign

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

True
False

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Database Redesign
Because of the need for extensive knowledge of SQL, many database developers choose to automate the redesign process.

True
False

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Database Redesign
How can you find rows that do not match some specified condition?

None of these
Double use of NOT EXISTS
NOT EXISTS
EXISTS

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Database Redesign
Database redesign is not terribly difficult if the:

database is relatively small.
database is well-designed.
database is structured.
database has no data.

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Database Redesign
Which of the following SQL statements are helpful in database redesign?

EXISTS/NOT EXISTS expressions only
Both of the above are helpful
Correlated subqueries only
None of these

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Database Redesign
Some organizations take the stand that no application should ever employ the true name of a table.

True
False

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