DBI202Xuất hiện trong 1 đề thi
Given R as a relation, which of the following statements is correct about normalizing data in 3NF form?
Các lựa chọn
AIf R has a primary key, no repeating groups, and no multivalued attributes/composite attributes.
BIf R has a primary key, no repeating groups, no multivalued attributes/complex attributes, and no partial functional dependencies.
CIf R has a primary key, no repeating groups, no multivalued/composite attributes, and no transitive dependencies.
DIf R has a primary key, no repeating groups, no multivalued attributes/complex attributes, no transitive functional dependencies, and no partial functional dependencies.
EIf R has complete functional dependency.