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Relationship Sets


A relationship set defines how two entities interact with each other. For example, an employee works for HR department, ‘works for’ is the relationship.

The set of relationship sets of same type is called relationship sets.





Relationship Degree, Recursive Relationship

The degree of a relationship is defined by number of entity types participating in it. The relationship with degree two is called binary relationship and degree of three is called ternary

Recursive Relationship:

In some cases the entity types self-links and is called recursive relationship. For example, the employee is an entity type and manages is a relationship. The employee entity is related to manager entity where both employee and manager belong to same entity sets.

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