Question In a relational database, if A is a foreign key in relation R that references the primary key B in relation S, and X represents the set of non-null values in A, while Y is the set of all …
Axioms of Functional Dependencies in DBMS The Axioms of Functional Dependencies (also known as Armstrong’s Axioms) are a set of rules used to infer all possible functional dependencies from a given set of FDs. These axioms are sound (valid) and …
