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What is Enhanced E-R Model Concepts Explained about?
The chapter introduces the enhanced entity-relationship (EER) model which extends the basic ER model to address its shortcomings. The EER model introduces supertype/subtype relationships to model inheritance and specialization. Supertypes are generic entity types that have subtypes as subgroups. Subtypes inherit attributes from their supertypes. The chapter discusses concepts like generalization, specialization, attribute inheritance, and using subtype discriminators to model disjoint and overlapping subtyp
- Author
- Khalid Ibrahim
- Language
- EN