Database Redesign
The EXISTS keyword will be true if:

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

ANSWER DOWNLOAD EXAMIANS APP

Database Redesign
Changing cardinalities in a database is:

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

ANSWER DOWNLOAD EXAMIANS APP