FOR FREE MATERIALS
Membership Test:
In the membership test, we check a given functional dependency is a member (set) of functional dependency set or not.
Take an example to describe the method to check the membership test:
To check whether X → Y (FDs) is a member of the Functional Dependency set or not.
.png)
We check by closer that X → Y is present in the Functional Dependency set or not.
Let {A → B, B → C} ⊨ A → C that means A → C is present in this FDs {A → B, B → C}.
.png)
.png)
.png)
.png)
Another example:
.png)
.png)
.png)
Q. Check following membership valid or not
.png)
.png)
.png)
.png)
.png)
Solutions:
.png)
.png)
.png)
.png)
.png)
.png)
.png)
.png)
.png)
.png)
.png)
.png)
Contributed by
