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Database Redesign

Database Redesign
Which SQL-92 standard SQL command can be used to change a table name?

ALTER TABLE
None of these
CHANGE TABLE
RENAME TABLE

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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
Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign.

optimistic
ambivalent
None of these
skeptical

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Database Redesign
Reverse engineering is the process of reading a database schema and producing a data model from that schema.

False
True

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Database Redesign
To drop a column that is used as a foreign key, first:

All of these
drop the table containing the foreign key.
drop the primary key.
drop the foreign key constraint.

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Database Redesign
The NOT EXISTS keyword will be true if:

neither of these two conditions is met.
both of these two conditions are met.
any row in the subquery meets the condition.
all rows in the subquery fail the condition.

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