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Database Redesign

Database Redesign
Correlated subqueries are similar to a regular subquery.

False
True

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Database Redesign
It is not easy to build a database correctly the first time.

True
False

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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
Typically, there should be at least two different copies of the database schema used in the redesign process.

False
True

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

Double use of NOT EXISTS
EXISTS
NOT EXISTS
None of these

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Database Redesign
What SQL command can be used to delete columns from a table?

MODIFY TABLE TableName DROP ColumnName
ALTER TABLE TableName DROP COLUMN ColumnName
MODIFY TABLE TableName DROP COLUMN ColumnName
ALTER TABLE TableName DROP ColumnName

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