What would cause a relational schema for a database to contain more relation schemas than there are entity types?

QUESTION:

What would cause a relational schema for a database to contain more relation schemas than there are entity types?

ANSWER:

This is somewhat of a trick question. A relational schema has the same number of relation schemas as there are entity types as long as the Fine-granular Design-Specific ER diagram serves as input.

 

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