Which normal form is stricter than 3NF and requires every non-trivial functional dependency X → Y to have X as a superkey?
Options
- A. 1NF
- B. 2NF
- C. BCNF
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
C. BCNF
Detailed Explanation
- Boyce-Codd Normal Form (BCNF): For every non-trivial functional dependency X → Y, X must be a superkey.
- BCNF is stricter than 3NF.
- It addresses certain redundancy problems that may remain in 3NF.