Enhanced ER(database)
Ch 4 E E R Biz Rules
Lesson 3 - Enhanced ER Model
1 Chapter 4: The Enhanced ER Model and Business Rules Modern Database Management 8 th Edition.
Chapter 3 Define terms Understand use of supertype/subtype relationships Understand use of specialization and generalization techniques Specify.
1 © Prentice Hall, 2002 Chapter 4: The Enhanced E-R Model and Business Rules Modern Database Management 6 th Edition Jeffrey A. Hoffer, Mary B. Prescott,
Chapter 3 © 2013 Pearson Education, Inc. Publishing as Prentice Hall 1 CHAPTER 4: THE ENHANCED E-R MODEL Modern Database Management 11 th Edition Jeffrey.
CHAPTER 3: THE ENHANCED E-R MODEL Copyright © 2014 Pearson Education, Inc. 1 Essentials of Database Management Jeffrey A. Hoffer, Heikki Topi, V. Ramesh.
Chapter 4 © 2005 by Prentice Hall 1 Objectives Definition of terms Definition of terms Use of supertype/subtype relationships Use of supertype/subtype.
Associative Entities A relationship cannot have attributes What happens when one or more attributes exist for a relationship? Employee – Project – Billing.
Enhanced Entity-Relationship Modeling. Entity, Relationship, Attribute Ebay: –Bid: Is this an entity or relationship? –Item and images Is image an entity.
IS 4420 Database Fundamentals Chapter 4: The Enhanced ER Model and Business Rules Leon Chen.
