Database Redesign
Database redesign is not terribly difficult if the:

database is relatively small.
database has no data.
database is structured.
database is well-designed.

ANSWER DOWNLOAD EXAMIANS APP

Database Redesign
The EXISTS keyword will be true if:

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

ANSWER DOWNLOAD EXAMIANS APP