100+ Bars beers sells bars PowerPoint (PPT) Presentations, Bars beers sells bars PPTs

Bars beers sells bars - PowerPoint PPT Presentation

Entity-Relationship Model

Entity-Relationship Model. E-R 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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979 views • 68 slides

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 database designs. Kinds of data and how they connect. Not how data changes. Designs are pictures called entity-relationship diagrams .

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843 views • 54 slides

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Bars beers sells bars - PowerPoint PPT Presentation

Entity-Relationship Model

Entity-Relationship Model