Which of the following is TRUE ?
2025
Which of the following is TRUE ?
- A.
Every relation in 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
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Correct answer: C
BCNF (Boyce-Codd Normal Form) is a stricter version of 3NF. Every relation in BCNF satisfies all requirements of 3NF, but the reverse is not true.
BCNF eliminates redundancy by ensuring that every determinant is a candidate key, which automatically satisfies the 3NF condition.