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Which of the following statements best describes a partial dependency? a. A partial dependency exists when there is a functional dependence in which the determinant is only part of the primary key.
b. A partial dependency exists when there is no functional dependence in which the determinant is only part of the primary key.
c. A partial dependency exists when there is a functional dependence in which the determinant is the primary key.
d. A partial dependency exists when there is no functional dependence in which the determinant is the primary key.

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