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Functional Dependency Analysis

Functional dependency analysis reveals information about column relationships. This enables you to search for things such as one attribute determining another attribute within an object.

Table: Employees Table shows the contents of the Employees table in which the attribute Dept. Location is dependent on the attribute Dept. Number. Note that the attribute Dept. Number is not dependent on the attribute Dept. Location.

Employees Table

ID Name Salary Dept Number Dept Location

10

Alison

1000

10

SF

20

Rochnik

1000

11

London

30

Meijer

300

12

LA

40

John

500

13

London

50

George

200

13

London

60

Paul

600

13

London

70

Ringo

100

13

London

80

Yoko

600

13

London

90

Jones

1200

10

SF