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Chapter 3

Chapter 3. The Entity-Relationship Model. ER Model. Conceptual Design answers: What are the entities and relationships? What information about these entities and relationships should we store in the database? What are the integrity constraints or business rules? ER Model Concepts:

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Database Design: ER Modelling (Continued)

Database Design: ER Modelling (Continued). Reading: C&B, Chaps 11,12&15. In this lecture you will learn. Structural constraints Enhanced ER modelling Step-by-step procedure for conceptual data modelling. Structural constraints. Apply on the entity types that participate in a relationship

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Staff manages branch - PowerPoint PPT Presentation

Chapter 3

Database Design: ER Modelling (Continued)