1 Chapter 4: The Enhanced ER Model and Business Rules Modern Database Management 8 th Edition.
© 2011 Pearson Education 1 Chapter 3: Advanced Database Analysis Modern Database Management 10 th Edition, International Edition Jeffrey A. Hoffer, V.
Chapter 4 © 2005 by Prentice Hall 1 Objectives Definition of terms Definition of terms Use of supertype/subtype relationships Use of supertype/subtype.
Enhanced Entity-Relationship Modeling. Entity, Relationship, Attribute Ebay: –Bid: Is this an entity or relationship? –Item and images Is image an entity.
The Enhanced E-R (EER) Model The Enhanced E-R (EER) Model EER model is used to identify the model that has resulted form extending the original ER model.
