. Refer to this entity-relationship diagram. How does this diagram depict a unattractive relationship rather than a binary relationship. A: The entity types back each other up B: the salesperson have the same commission percentage C: the entity types are the same for each D: the salesperson have the same year of hire

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Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.