Question

If there is a functional dependency between attributes X and Y in a relation R, under what circumstances would attribute X be considered a candidate key? Question 1 options: If attribute X is the first listed attribute in relation R If a constraint on R states that X determines more than one value of Y If attribute X = attribute Y If a constraint on R states that there cannot be more than one tuple with a given X-value in any relation instance r�.

Name: if there is a functional dependency between attributes x and y in a relation r under what circumstances would attribute x be considered a candidate key question 1 options if attribute x is t 57203
Uploaded: 2023-01-05T11:02:20-08:00
Duration: 3 min 9 s
Channel: Sri K
Description: if there is a functional dependency between attributes x and y in a relation r under what circumstances would attribute x be considered a candidate key question 1 options if attribute x is t 57203

          If there is a functional dependency between attributes X and Y in a relation R, under what circumstances would attribute X be considered a candidate key?
Question 1 options:
If attribute X is the first listed attribute in relation R
If a constraint on R states that X determines more than one value of Y
If attribute X = attribute Y
If a constraint on R states that there cannot be more than one tuple with a given X-value in any relation instance r�.

Added by Rita T.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

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Solved by Expert Sri K

01/05/2023

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If there is a functional dependency between attributes X and Y in a relation R, under what circumstances would attribute X be considered a candidate key? Question 1 options: If attribute X is the first listed attribute in relation R If a constraint on R states that X determines more than one value of Y If attribute X = attribute Y If a constraint on R states that there cannot be more than one tuple with a given X-value in any relation instance r�.