In the context of functional dependencies, what does the term "transitive rule" refer to?a.A rule for inferring new functional dependenciesb.A rule for enforcing referential integrityc.A rule for determining superkeysd.A rule for determining candidate keys
Question
In the context of functional dependencies, what does the term "transitive rule" refer to?a.A rule for inferring new functional dependenciesb.A rule for enforcing referential integrityc.A rule for determining superkeysd.A rule for determining candidate keys
Solution
The term "transitive rule" in the context of functional dependencies refers to a rule for inferring new functional dependencies. This rule is part of Armstrong's axioms, a set of rules used to infer all the functional dependencies on a relational database. The transitive rule states that if we have two functional dependencies, A -> B and B -> C, then we can infer a third functional dependency, A -> C. This is called a transitive dependency.
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