Nielit Scientist-C 2016 march
August 29, 2024Database-Management-System
August 29, 2024Nielit Scientist-C 2016 march
| Question 4 |
A functional dependency of the form x → y is trivial if
| y ⊆ x | |
| y ⊂ x | |
| x ⊆ y | |
| x ⊂ y and y ⊂ x |
Question 4 Explanation:
Trivial − If a functional dependency (FD) X → Y holds, where Y is a subset of X, then it is called a trivial FD. Trivial FDs always hold.
Correct Answer: A
Question 4 Explanation:
Trivial − If a functional dependency (FD) X → Y holds, where Y is a subset of X, then it is called a trivial FD. Trivial FDs always hold.