QUESTION $14$

This diagram likely means that a professor may teach no classes or as many as three classes.

True

False

QUESTION $15$

COURSE $($CRS$\_$CODE, DEPT$\_$CODE, CRS$\_$DESCRIPTION, CRS$\_$CREDIT$)$

CLASS $($CRS$\_$CODE, CLASS$\_$SECTION, CLASS$\_$TIME, ROOM$\_$CODE, PROF$\_$NUM$)$

In the above, a

exists between COURSE and CLASS.

QUESTION $16$

In this illustration, STU$\_$LNAME and STU$\_$EMAIL are required attributes.

True

False

QUESTION $17$

In this illustration,

is the derived attribute.

a$.$ EMPLOYEE

b$.$ EMP$\_$AGE

c$.$ EMP$\_$NUMBER

d$.$ EMP$\_$DOB