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Lecture Fundamentals of Database Systems - Chapter 4 (Part I): Enhanced Entity-Relationship and UML modeling

In this chapter, we describing features that have been proposed for semantic data models, and show how the ER model can be enhanced to include these concepts, leading to the Enhanced ER (EER) model. | Fundamentals of DATABASE SYSTEMS FOURTH E D I T I o N ELMASRI NAVATHE Chapter 4 - Part I Enhanced Entity-Relationship and UML Modeling PEARSON Addison Wesley Copyright 2004 Ramez Elmasri and Shamkant Navathe. s ỉ Enhanced-ER EER Model Concepts Includes all modeling concepts of basic ER Additional concepts subclasses superclasses specialization generalization categories attribute inheritance The resulting model is called the enhanced-ER or Extended ER E2R or EER model It is used to model applications more completely and accurately if needed It includes some object-oriented concepts such as inheritance Elmasri and Navathe Fundamentals of Database Systems Fourth Edition Copyright 2004 Ramez Elmasri and Shamkant .