Functional Dependency (FD): A relationship between attributes in a relational database where one set of attributes uniquely determines another.

A direct relationship between data elements in a relational database. Functional dependency (FD) states that one data element is dependent on another. For example, social security number (SSN ...

The resultant functional dependency-driven structures, in their own way, describe the essentials of the business area being data modeled. After 3NF, there are two extra normal forms that claim to be ...

Contrast with functional dependency. The Goal Is Eliminate Transitive Dependencies When designing a database, "third normal form" is achieved by eliminating transitive dependencies in each table.