Discussion
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.
Answer: B
Correct answer: False
Boyce-Codd Normal Form requires that every determinant be a candidate key, and says nothing about whether that key is composite. A single-attribute key is perfectly acceptable. The condition exists because a determinant that is not a candidate key allows the same fact to be stored in many rows, which is the source of update anomalies.
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