What is "Functional Dependency"?

 Posted by Abhisek on 7/27/2010 | Category: Sql Server Interview questions | Views: 5805

Suppose there are two sets of attributes, X and Y. Then Y is said to be functionally dependent to X if a given value for each attribute in X uniquely determines the value of the attributes in Y.

Here X is called the determinant of the functional dependency and the functional dependency is denoted as X--->Y

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