Quiz#1

One to many relation

• Function

• Not Function

Teacher to Student

• Function

• Not Function

A student and his/her ID number.

• Function

• Not Function

A jeepney and its plate number.

• Function

• Not Function

A teacher and his cellular phones.

• Function

• Not Function

{(7,3), (8,2), (4,1), (9,0), (10,-1)}

• Function

• Not Function

{(0,-1), (2,-5), (4,-9), (6,13)}

• Function

• Not Function

Many to one relation

• Function

• Not Function

A pen and the color of its ink

• Function

• Not Function

{(1,2), (3,4), (5,6), (7,8), (9,10)}

• Function

• Not Function