Question

Which of the following is TRUE?

(A) Every relation is 3NF is also in BCNF 

(B) A relation R is in 3NF if every non-prime attribute of R is fully functionally dependent on every key of R 

(C) Every relation in BCNF is also in 3NF 

(D) No relation can be in both BCNF and 3NF

Answer 1

(C) Every relation in BCNF is also in 3NF

Option A is false since BCNF is stricter than 3NF 

Option B is false since the definition given here is of 2NF

Option C is true, since BCNF is stricter than 3NF, every relation in BCNF satisfies all the properties of 3NF.