The Enhanced 2025

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Chapter 8 discusses the Enhanced Entity-Relationship (EER) model, which extends the traditional ER model to better represent complex database schemas through concepts like subclasses, superclasses, specialization, generalization, and inheritance. It covers constraints related to these concepts, modeling UNION types, and provides examples such as a UNIVERSITY EER schema. The chapter also touches on data abstraction, knowledge representation, and ontology concepts relevant to database design.

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The Enhanced 2025

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