Table 1 is the Sales table, which is an unnormalized table. The description of the Sales table are SNUM = salesman number, CNUM = customer number, WNUM = warehouse number, SAMOUNT = sale amount, etc.   a.)Write down four functional dependencies (FDs) that are valid in the Sales table b.)Write down the Sales table's normalization result that is in the 2NF, but not in the 3NF. Explain why the table is not in the 3NF.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Table 1 is the Sales table, which is an unnormalized table. The description of the Sales table are SNUM = salesman number, CNUM = customer number, WNUM = warehouse number, SAMOUNT = sale amount, etc.

 

a.)Write down four functional dependencies (FDs) that are valid in the Sales table

b.)Write down the Sales table's normalization result that is in the 2NF, but not in the 3NF.
Explain why the table is not in the 3NF.

SNUM SNAME
SAREA
CNUM
CNAME
WNUM
WLOC
SAMOUNT
3462
Bruce
South
18765
18830
Delta Systems
4
Fargo
Bismarck
13540
10600
Jon & Jon Co.
3
Bismarck
Superior
Superior
19242
9700
Tri-Tachyon
Imperium Sys.
3
3593
David
North
18841
11560
18899
Anaheim
2590
Piping
Drachmae Inc.
19565
Plymouth
8800
Transcribed Image Text:SNUM SNAME SAREA CNUM CNAME WNUM WLOC SAMOUNT 3462 Bruce South 18765 18830 Delta Systems 4 Fargo Bismarck 13540 10600 Jon & Jon Co. 3 Bismarck Superior Superior 19242 9700 Tri-Tachyon Imperium Sys. 3 3593 David North 18841 11560 18899 Anaheim 2590 Piping Drachmae Inc. 19565 Plymouth 8800
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