Database Management System20785 marksFunctional Dependencies
Define Functional dependencies. Explain trivial and non trivial dependencies?
Define Functional dependencies. Explain trivial and non trivial dependencies? [5]
A functional dependency is a constraint between two sets of attributes in a relation. For a relation R, a functional dependency is denoted as: X → Y This means attribute (or set of attributes) X functionally determines attribute (or set of attributes) Y. In other words, for any two tuples t1 and ...