(Choose 1 answer)
Look at the following statements:
(a) For any relation schema, there is a dependency-preserving decomposition into 3NF
(b) For any relation schema, there is not dependency-preserving decomposition into 3NF (c) For any relation schema, there is dependency-preserving decomposition into BCNF
(d) For some relation schema, there is not dependency-preserving decomposition into BCNF
A. (a) and (d) are true
B. (a) and (b) are true
C. (a) and (c) are true
D. (b) and (d) are true
Q: 18
