Slide 1© 2011 Pearson Education 1 Chapter 3: Advanced Database Analysis Modern Database Management 10 th Edition, International Edition Jeffrey A. Hoffer, V. Ramesh, Heikki…

Slide 1 Chapter 4 © 2005 by Prentice Hall 1 Objectives Definition of terms Definition of terms Use of supertype/subtype relationships Use of supertype/subtype relationships…

Slide 1 Data Modeling Advanced Concepts Slide 2 Common Modeling Situations Unary relationships Binary relationships Ternary relationships Attributive or Weak Entities Associative…

Slide 1 Enhanced Entity-Relationship Modeling Slide 2 Entity, Relationship, Attribute Ebay: –Bid: Is this an entity or relationship? –Item and images Is image an entity…

© 2011 Pearson Education, Inc.  Publishing as Prentice Hall * Chapter 3: The Enhanced E-R Model Modern Database Management 10th Edition Jeffrey A. Hoffer, V. Ramesh,…

CHAPTER 3: THE ENHANCED E-R MODEL * Modern Database Management Chapter 3 © 2013 Pearson Education, Inc.  Publishing as Prentice Hall OBJECTIVES Define terms Understand…

Slide 1 Chapter 4 1 Chapter 4: The Enhanced ER Model and Business Rules Slide 2 Chapter 4 2 Supertypes and Subtypes Subtype: A subgrouping of the entities in an entity type…

Slide 1 Slide 2  Keys are special fields that serve two main purposes: ◦ Primary keys are unique identifiers of the relation in question. Examples include employee numbers,…

CHAPTER 3: THE ENHANCED E-R MODEL * Modern Database Management Chapter 3 © 2013 Pearson Education, Inc.  Publishing as Prentice Hall OBJECTIVES Define terms Understand…

The Enhanced ER Model and Business Rules © 2011 Pearson Education, Inc.  Publishing as Prentice Hall 1 Chapter 3: The Enhanced E-R Model Modern Database Management…