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Entity-Relationship Model

Entity-Relationship Model. Diagrams Class hierarchies Weak entity sets. Bibliografia. Database systems: the complete book by Molina, Ullman, Widom. Prentice Hall, 2001 www-db.stanford.edu/~ ullman/dscb.html. Purpose of E/R Model.

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Entity-Relationship Model

Entity-Relationship Model. Diagrams Class hierarchies Weak entity sets. Purpose of E/R Model. The E/R model allows us to sketch the design of a database informally. Designs are pictures called entity-relationship diagrams .

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The Entity-Relationship Model

The Entity-Relationship Model. Zaki Malik September 16, 2008. Till the Midterm Examination. Relational Data Models The Entity-Relationship (ER) model The relational model Converting E/R diagram to relational designs. You should know how to

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490 views • 32 slides

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Entity-Relationship Model

Entity-Relationship Model

The Entity-Relationship Model