Ternary (Degree 3)
In the Ternary relationship, there are three types of entity associates. So, we can say that a Ternary relationship exists when there are three types of entity and we call them a degree of relationship is 3. Since the number of entities increases due to this, it becomes very complex to turn E-R into a relational table. Now let’s understand with the examples.
Example: We have three entity types ‘Teacher’, ‘Course’, and ‘Class’. The relationship between these entities is defined as the teacher teaching a particular course, also the teacher teaches a particular class. So, here three entity types are associating we can say it is a ternary relationship.
Degree of Relations in DBMS
We are living in a world where every entity has relationships with one other whether a living or non-living being. For example, you are a single entity but you share different relations with your family and friends. Even within a family, you are the son of your father at the same time you are also a sibling of your brother. Similarly, the relationships exist in Database Management (DBMS). In this article, we are going to learn about what is the degree of relationships, and the types of relationships.