Question

Give the functional dependency of the following record and make sure it is in First Normal...

Give the functional dependency of the following record and make sure it is in First Normal Form:

Date Basin Chamber Settling Pond FinalPond Pool Aeration Contact Chamber
12-09-2010

P.H.:34.5

D.O.: 2.3

P.H.: 4.5

D.O.: 9.3

P.H.:94.5

D.O.: 1.3

P.H.:5.66

D.O.: 22

P.H.:4.5

D.O.: 2.3

P.H.:34.5

D.O.: 2.3

P.H.:3.5

D.O.: 2

P.H.:34.5

D.O.: 2.3

12-15-2010

P.H.:38.5

D.O.: 2.3

P.H.:43.5

D.O.: 1.3

P.H.:4.5

D.O.: 22.3

P.H.:44.5

D.O.: 22.3

P.H.:4.5

D.O.: 2.3

P.H.:4.5

D.O.: 20.3

P.H.:14.5

D.O.: 12.3

P.H.:40.5

D.O.: 22.3

12-17-2010

P.H.:14.5

D.O.: 2.3

P.H.:48.5

D.O.: 25.3

P.H.:8.5

D.O.: 5.3

P.H.:84.5

D.O.: 2.3

P.H.:39.5

D.O.: 29.3

P.H.:7.8

D.O.: 12.33

P.H.:34.59

D.O.: 12.38

P.H.:40.5

D.O.: 22.3

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Answer #1

For the above table in 1st normal form, it must follow the property of atomicity. Each column must have atomic or only one value.

On normalizing to 1st NF, the above table becomes:

Date Basin P.H. Basin D.O.

Chamber P.H.

Chamber D.O. Settling P.H. Setting D.O. Pond P.H. Pond D.O. FinalPond P.H. FinalPond D.O. Pool P.H. Pool D.O. Aeration P.H. Aeration D.O.

Contact Chamber P.H.

Contact Chamber D.O.
12-09-2010

P.H.:34.5

D.O.: 2.3

P.H.: 4.5

D.O.: 9.3

P.H.:94.5

D.O.: 1.3

P.H.:5.66

D.O.: 22

P.H.:4.5

D.O.: 2.3

P.H.:34.5

D.O.: 2.3

P.H.:3.5

D.O.: 2

P.H.:34.5

D.O.: 2.3
12-15-2010

P.H.:38.5

D.O.: 2.3

P.H.:43.5

D.O.: 1.3

P.H.:4.5

D.O.: 22.3

P.H.:44.5

D.O.: 22.3

P.H.:4.5

D.O.: 2.3

P.H.:4.5

D.O.: 20.3

P.H.:14.5

D.O.: 12.3

P.H.:40.5

D.O.: 22.3
12-17-2010

P.H.:14.5

D.O.: 2.3

P.H.:48.5

D.O.: 25.3

P.H.:8.5

D.O.: 5.3

P.H.:84.5

D.O.: 2.3

P.H.:39.5

D.O.: 29.3

P.H.:7.8

D.O.: 12.33

P.H.:34.59

D.O.: 12.38

P.H.:40.5

D.O.: 22.3
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