Slide 1THE RELATIONAL DATA MODEL SECTION 4 General Concepts Slide 2 Introduction E.F. Codd in 1970 Existing databases used physical pointers What is the problem with pointers?…
Slide 1Anskaffelse og kravspecifikation UID16_Datamodels Slide 2 UID16: Data models Kilder UID: Soren Lauesen: User interface design - A software engineering perspective.…
Slide 1 Data Modeling and Relational Database Design ISYS 650 Slide 2 Conceptual Database Design Methodology Identify entity types. Identity relationship types between the…
Slide 1 The Relational Model Chapter Two (Excerpts) DAVID M. KROENKE’S DATABASE CONCEPTS, 2 nd Edition Slide 2 DAVID M. KROENKE’S DATABASE CONCEPTS, 2nd Edition © 2005…