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Lecture 04 Entity/Relationship Modelling

Lecture 04 Entity/Relationship Modelling. Outline. E/R model (Chapter 5) From E/R diagrams to relational schemas (Chapter 5) Constraints in SQL (Chapter 4). 1. Database Design. Modelling Decide which part of reality is represented in a database

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E/R Diagrams and Functional Dependencies

E/R Diagrams and Functional Dependencies. Modeling Subclasses. The world is inherently hierarchical. Some entities are special cases of others We need a notion of subclass. This is supported naturally in object-oriented formalisms. Products. Software products. Educational products.

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Conceptual Database Design

Conceptual Database Design. Building an Application with a DBMS. Requirements modeling (conceptual, pictures) Decide what entities should be part of the application and how they should be linked. Schema design and implementation Decide on a set of tables, attributes.

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Lecture 07: Conceptual Database Design

Lecture 07: Conceptual Database Design. Building an Application with a DBMS. Requirements modeling (conceptual) Decide what entities should be part of the application and how they should be linked. Schema design and implementation Decide on a set of tables, attributes.

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259 views • 25 slides

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Lecture 04 Entity/Relationship Modelling

E/R Diagrams and Functional Dependencies

Conceptual Database Design

Lecture 07: Conceptual Database Design