Database Redesign
Database redesign is not terribly difficult if the:

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

ANSWER DOWNLOAD EXAMIANS APP

Database Redesign
The EXISTS keyword will be true if:

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

ANSWER DOWNLOAD EXAMIANS APP