Thursday, October 8, 2009

Functional Dependency

Functional dependency

[1]Functional dependency describes the relationship between
attributes in a relation.

[2]For example, if A and B are attributes of relation R, and B is
functionally dependent on A ( denoted A B), if each value of
A is associated with exactly one value of B. ( A and B may each
consist of one or more attributes.)




The above answer is for 2marks....for 4m giv any real time example along vth above answer


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