Question

The Primary Key of the table recording this information is SheepID+WeighingDate. The table has not been...

The Primary Key of the table recording this information is SheepID+WeighingDate. The table has not been normalized beyond First Normal Form. That is, there are no ‘repeating groups’, but there may be Partial and Transitive Dependencies.

SheepID

Owner

Birthdate

WeighingDate

Vet

Weight

VetPhoneNum

K3922

McNab013

2013-05-12

2013-08-14

M330

22

7633088852

K3922

McNab013

2013-05-12

2014-06-02

S929

34

7609865463

K3922

McNab013

2013-05-12

2015-08-02

M330

43

7633088852

K3922

McNab013

2013-05-12

2016-07-30

P301

53

7682907965

K3922

McNab013

2013-05-12

2017-08-12

P301

52

7682907965

K3922

McNab013

2013-05-12

2018-07-22

S929

51

7609865463

T8832

McNab013

2012-03-26

2012-08-14

K339

19

7602907550

T8832

McNab013

2012-03-26

2013-09-01

S929

26

7609865463

T8832

McNab013

2012-03-26

2014-08-15

K339

32

7602907550

T8832

McNab013

2012-03-26

2015-07-28

K339

40

7602907550

T8832

McNab013

2012-03-26

2016-08-11

T975

42

7646746741

P9742

Smith002

2014-05-10

2014-09-11

K339

14

7602907550

P9742

Smith002

2014-05-10

2015-08-10

S300

25

7629920821

P9742

Smith002

2014-05-10

2016-08-29

K339

35

7602907550

P9742

Smith002

2014-05-10

2017-09-01

S929

44

7609865463

P9742

Smith002

2014-05-10

2018-08-22

S929

51

7609865463

M3110

Smith002

2015-05-12

2015-09-12

S300

15

7629920821

M3110

Smith002

2015-05-12

2016-09-10

S300

26

7629920821

M3110

Smith002

2015-05-12

2017-08-17

K339

34

760290755

Question 1

Identify the Functional Dependencies in this table. Your answer should conform to the following format: If, taken together, attributes A and B determine C, show it this way:

A + B → C

0 0
Add a comment Improve this question Transcribed image text
Answer #1

SheepId -->Owner, Birthdate

Owner -->SheepId, Birthdate

Birthdate -->SheepId, Owner

SheepId+WeighingDate --> Vet,Weight,VetPhoneNum,Owner,Birthdate

Vet -->VetPhoneNum

SheepId+Owner+WeighingDate --> Vet,VetPhoneNum,Weight

SheepId+Owner+Birthdate+WeighingDate -->Vet,Weight,VetPhoneNum

WeighingDate+Vet -->VetPhoneNum, Weight, SheepId,Owner, Birthdate

WeighingDate+Weight --> Vet, VetPhoneNum, SheepId,Owner,Birthdate

WeighingDate+Vet+Weight --> VetPhoneNum,SheepId,Owner,Birthdate

WeighingDate+Weight+VetPhoneNum --> Vet,Sheepid,Owner,Birthdate

WeighingDate+VetPhoneNum+Vet --> Weight,Owner,SheepId,Birthdate

SheepId+Vet --> VetPhoneNum

SheepId+Owner+BirthDate+Vet --> VetPhoneNum

SheepId+Weight --> VetPhoneNum

SheepId+Owner -->VetPhoneNum

Sheepid+Owner+BirthDate --> VetPhoneNum, Weight

SheepId+WeighingDate --> Owner,BirthDate,Vet,Weight,VetPhoneNum

WeighingDate --> Owner,BirthDate,SheepId,Weight,Vet,VetPhoneNum

WeighingDate+Owner --> SheepId,BirthDate,Weight,Vet,VetPhoneNum

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