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 inA． 1NFB．2NFC．3NFD．BCNF
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
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