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
The EXISTS keyword will be true if:

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

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Database Redesign
Changing cardinalities in a database is:

a common database design task.
a database design task that never occurs.
a rare database design task, but does occur.
is impossible to do, so a new database must be constructed and the data moved into it.

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