Which term refers to an attribute or group of attributes on which another attribute is functionally dependent?

The term that describes an attribute or group of attributes on which another attribute is functionally dependent is called a determinant. In the context of databases, when you say that one attribute is functionally dependent on another, it means that the value of one attribute can be uniquely determined by the value of another attribute or a combination of attributes.

For example, in a database table of students, if "Student ID" is the determinant of "Student Name," it implies that for each unique "Student ID," there is a corresponding unique "Student Name." This concept is crucial in database normalization processes. Understanding determinants assists in organizing data to reduce redundancy and improve data integrity, ensuring that the relationships between attributes are appropriately defined.

In contrast, a domain refers to the set of permissible values for an attribute, an entity represents a thing or object in the database that can have data stored about it, and a foreign key is an attribute that creates a link between two tables, representing a relationship but not necessarily a functional dependency in the same way as a determinant.