Discussion
A candidate key is a determinant that determines all the other columns is a relation.
Answer: A
Correct answer: True
A candidate key is a minimal set of attributes that uniquely identifies a row, and identifying the row fixes the value of every attribute in it - so the key functionally determines every other column. This is why candidate keys are determinants; the point of Boyce-Codd Normal Form is to insist that every determinant be one of them.
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