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Database Redesign

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

False
True

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

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

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Database Redesign
The data model produced from the reverse engineering process is a true logical model.

False
True

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Database Redesign
How many copies of the database schema are typically used in the redesign process?

Four
One
Three
Two

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

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

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Database Redesign
If a database is built correctly the first time, it will not have to be redesigned.

True
False

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