Question 10300 – Database-Management-System
March 6, 2024Question 10302 – Database-Management-System
March 6, 2024Question 10301 – Database-Management-System
An instance of a relational scheme R(A, B, C) has distinct values for attribute A.
Can you conclude that A is a candidate key for R?
Correct Answer: B
Question 2 Explanation:
Because FD’s are defined on the schema itself, not the instance. So, based on the state of the instance we cannot say what holds for schema (there can be many instances for R).
Yes
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