问题
R = ( A, B, C, D ) - No functional dependencies are valid in the relational schema R
For the above relational, what is the highest normal form? I have a question where i am supposed to identify the highest normal form and decompose it into BCNF if it is not in BCNF.
回答1:
If no valid FDs holds (a part from the trivial dependencies), then the only candidate key is ABCD, and the relation is both in 3NF and BCNF.
来源：https://stackoverflow.com/questions/59008573/normalization-on-relational-schema-with-no-functional-dependencies