Discussion
Given the functional dependency R → S , R is called the determinant.
Answer: A
Correct answer: True
In R → S, R is the determinant and S the dependent attribute: R is what fixes the value of S. Every key is a determinant, since identifying a row fixes all its attributes, but the converse fails - and a determinant that is not a candidate key is precisely the violation Boyce-Codd Normal Form forbids.
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