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Database Redesign

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

False
True

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

True
False

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

ALTER TABLE TableName ADD ColumnName
MODIFY TABLE TableName ADD COLUMN ColumnName
ALTER TABLE TableName ADD COLUMN ColumnName
MODIFY TABLE TableName ADD ColumnName

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Database Redesign
The process of reading a database schema and producing a data model from that schema is known as:

reverse engineering.
database design.
data modeling.
None of these

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Database Redesign
The NOT EXISTS keyword will be true if any row in the subquery meets the condition.

False
True

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Database Redesign
Although creating test databases is a critical and necessary job, there are few career opportunities in this area.

False
True

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