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221 The Entity-Relationship Model • After completing this chapter, you should be able to explain the three phases of database design, Why are multiple phases useful? evaluate the significance of the Entity-Relationship Model (ER model) for DB design, enumerate the basic constructs of the ER model, develop ER diagrams (schemas in the ER model) for a given application, translate ER models into equivalent (as far as possible) relational models. 222 The Entity-Relationship Model Overview 1. Database Design Overview 2. Basic E

ER DIAGRAM

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After completing this chapter, you should be able to . explain the three phases of database design, Why are multiple phases useful? . evaluate the significance of the Entity-Relationship Model (ER model) for DB design, . enumerate the basic constructs of the ER model,