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Copyright © 2007 Ramez Elmasri and Shamkant B. Navathe Slide 5- 1 Chapter 5 The Relational Data Model and Relational Database Constraints Copyright © 2007 Ramez Elmasri and Shamkant B. Navathe Chapter Outline    Relational Model Concepts Relational Model Constraints and Relational Database Schemas Update Operations and Dealing with Constraint Violations Copyright © 2007 Ramez Elmasri and Shamkant B. Navathe Slide 5- 3 Relational Model Concepts  The relational Model of Data is ba
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Slide 5- 1 Copyright \u00a9 2007 Ramez Elmasri and Shamkant B. NavatheChapter 5 Copyright \u00a9 2007 Ramez Elmasri and Shamkant B. Navathe The Relational Data Model and Relational Database ConstraintsSlide 5- 3 Copyright \u00a9 2007 Ramez Elmasri and Shamkant B. Navathe Chapter Outline \ue000Relational Model Concepts \ue000Relational Model Constraints and Relational Database Schemas \ue000Update Operations and Dealing with Constraint ViolationsSlide 5- 4 Copyright © 2007 Ramez Elmasri and Shamkant B. Navathe Relational Model Concepts The relational Model of Data is based on the concept of a Relation The strength of the relational approach to data management comes from the formal foundation provided by the theory of relations We review the essentials of the formal relational model in this chapter Inpractice, there is a standard model based on SQL – this is described in Chapters 8 and 9 Note: There are several important differences between thefor mal model and thepractical model, as we shall see
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