Database-Management-System
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
| Question 765 |
If every functional dependency in set E is also in closure of F then this is classified as:
| FD is covered by E | |
| E is covered by F | |
| F is covered by E | |
| F plus is covered by E |
Question 765 Explanation:
A covers B, if every FD in B can be inferred from A.
A covers B if A + ⊆ B + (+ means closure ).
Every set of functional dependencies has a canonical cover.
A covers B if A + ⊆ B + (+ means closure ).
Every set of functional dependencies has a canonical cover.
Correct Answer: B
Question 765 Explanation:
A covers B, if every FD in B can be inferred from A.
A covers B if A + ⊆ B + (+ means closure ).
Every set of functional dependencies has a canonical cover.
A covers B if A + ⊆ B + (+ means closure ).
Every set of functional dependencies has a canonical cover.