GATE CS 2024 Question - Wise Solutions | DBMS | functional dependencies
on channel: Arihant Online Academy
A functional dependency F: X to Y is termed as a useful functional dependency if and only if it satisfies all the following three conditions:
• X is not the empty set.
• Y is not the empty set.
• Intersection of X and Y is the empty set.
For a relation R with 4 attributes, the total number of possible useful functional dependencies is
50
35
55
40
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