help1402

It's UWAweek 47

help1402

This forum is provided to promote discussion amongst students enrolled in CITS1402 Relational Database Management Systems.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message.

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UWA week 42 (2nd semester, week 12) ↓

2014 Exam Q6 (both)

8:05pm Sun 20th Oct, ANONYMOUS

Hello, Does anyone know the solution to the 2014 exam question 6 and give an explanation as to why? Many Thanks!

UWA week 43 (2nd semester, study break) ↓

2014 Exam Q6 (both)

4:09pm Mon 21st Oct, Mengxi L.

BCNF requires that for any non-trivial functional dependency 𝑋→𝑌 in a relation, X must be a superkey. This means that the left-hand side of the functional dependency must be a superkey for the relation. The answer should be d. Because in all other cases, the three remaining FDs show that the left hand side of the FD is actually a super key.

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