Relationship sets, Database Management System

A relationship set is a set of relationships of the similar type.

For example, let consider the relationship among two entities sets course and student. Collection of all the instances of relationship opts forms a relationship set known as relationship type.

Degree

The degree of a relationship type is the number of participating entity types.

The relationship among two entities is known as binary relationship. A relationship among three entities is known as ternary relationship.

Likewise relationship between n entities is called n-ry relationship.

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