Question
Consider the universal relation R = {A, B, C, D} and the set of functional dependencies FD = {{b} {d}} and the set of MVDs
Consider the universal relation R = {A, B, C, D} and the set of functional dependencies FD = {{b} {d}} and the set of MVDs = {{a,b} {c}}.
a. Write all the candidate keys for R.
b. What schema(s) would be produced by the 4NF decomposition algorithm?
A. R1={a,b,c,d} B. R1={b,d}, R2={a,b,c} C. R1={a,b,c},R2={a,b,d} D. R1={b,c},R2={b,d},R3={b,a}
E. none of the above
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Database Theory And Application Bio Science And Bio Technology International Conferences Dta And Bsbt 2010 Held As Part Of The Future Generation Information Technology Conference Fgit 2010 Jeju Island Korea December 2010 Proceedings
Authors: Yanchun Zhang ,Alfredo Cuzzocrea ,Jianhua Ma ,Kyo-il Chung ,Tughrul Arslan ,Xiaofeng Song
2010th Edition
3642176216, 978-3642176210
