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Author Question: An entity identifier can be either unique or nonunique. Indicate whether the statement is true or ... (Read 135 times)

biggirl4568

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on: Jul 7, 2018
An entity identifier can be either unique or nonunique.
 
  Indicate whether the statement is true or false

Question 2

Given the below functional dependency,MedicineCode  (MedicineName, ShelfLife, Manufacturer, Dosage)which of the following statements is not known to be true?
 
  A) MedicineCode is a determinant.
  B) MedicineName is a determinant.
  C) Manufacturer is functionally dependent on MedicineCode.
  D) ShelfLife is functionally dependent on MedicineCode.
  E) MedicineCode is a candidate key of the relation MEDICINE (MedicineName, ShelfLife, Manufacturer, Dosage, MedicineCode).


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briezy

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Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

B


biggirl4568

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Reply #2 on: Jul 7, 2018
Thank you :)


briezy

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Reply #3 on: Jul 7, 2018
Happy to help you


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