(14) What is the value of using role names to describe the participation of an entity type in a relationship type?

QUESTION:

What is the value of using role names to describe the participation of an entity type in a relationship type?

 

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SOLUTION

Role names can be used to clarify the nature of the participation of each entity type involved in a relationship type. They can be particularly helpful in clarifying the nature of the structural constraints in a recursive relationship.

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