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Database Redesign

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

False
True

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Database Redesign
The SQL-92 command to change a table name is RENAME TABLE.

False
True

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Database Redesign
Which of the following modifications may not succeed?

Changing a column data type from char to date
Both of the above actions should succeed
Neither of the above actions will succeed
Changing a column data type from numeric to char

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

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

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

False
True

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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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