Equivalence of Two Sets of FD’s
In DBMS, For equivalence of two sets of FD’s,
- Two different sets of FD’s for a given table may or may not be equivalent.
- If A and B are the two sets of FD’s, then the following cases are possible
Case 01: A covers B (A ⊇ B)
Case-02 : B covers A (B ⊇ A)
In Case 03: Both A and B cover each others (A = B)
Note: when Both A and B cover each other’s then it is known as A and B are equivalent otherwise both are not equivalent..
A = B