True Or False

Question 11 :

A candidate key must uniquely identify each row.


A). True
B). False
Answer : Option A

Question 12 :

Well-structured relations encourage anomalies of data.


A). True
B). False
Answer : Option B

Question 13 :

A foreign key may be null and still adhere to the referential integrity constraint.


A). True
B). False
Answer : Option A

Question 14 :

If a relation is in third normal form, it does not need to be in second normal form.


A). True
B). False
Answer : Option B

Question 15 :

The primary key of the new relation in a many-to-many relationship is a composite key comprised of the primary keys of each of the binary entities.


A). True
B). False
Answer : Option A