Functional dependencies

1 Explain how functional dependencies can be used to indicate that: a.) A one-to-one relationship set exists between entity sets advisor and student. b.) A one-to-many relationship set exists between entity sets advisor and student. 2 Given the relational schema R, where X and Y are attribute sets such as: X  R and Y  R, please elaborate the meaning of the functional dependencies such as:   Y and X  .

 

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