For relation R where primary key contains multiple attributes,no non－key attribu
For relation R where primary key contains multiple attributes,no non-key attribute should be functionally dependent on a part of the primary key. This relation R is at least in
A． 1NF
B．2NF
C．3NF
D．BCNF
正确答案：B
词条内容仅供参考，如果您需要解决具体问题
（尤其在法律、医学等领域），建议您咨询相关领域专业人士。