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Chapter 4 Logical Database Design and the Relational Model

Chapter 4. Logical Database Design and the Relational Model 1. Objectives Define terms for the Relational data Model Transform EE-R diagrams to relations Create tables with entity and Relational integrity constraints 2. 1. Steps in Database Problem Solving Study and Analyze w/Team Business Problem Interviews &. Integrated Model Conceptual Model (EE-R). Transformation (Six Cases). Logical Model (Relations). Normalization (Three Steps). Logical Model (3NF Relations). IMPLEMENTATION. 3. Logical Model : Relational Model Can represent all kinds of information Based on Math (relations).

• Relational model is more concrete, lower level – Usually many more tables than entities – Harder to understand by non-technical people – Directly implementable 24 Six Cases of Transforming E-R Diagrams into Relations 1. Map Regular Entities 2. Map Binary Relationships 3. Map Weak Entities 4. Map Associative Entities 5.

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