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Managing external data Part 1 Design of Databases

Managing external data Part 1 Design of Databases. Gitte Christensen Dyalog Ltd. Purpose. To give you a crash course in data analysis and databases After part 1 Design of Databases you will be able to analyse and organise data based on a requirement spec or use case.

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1.32k views • 119 slides

Entity-Relationship Model*

E/R Diagrams Weak Entity Sets Converting E/R Diagrams to Relations. Entity-Relationship Model*. *Adapted from slides developed by Hector Garcia Molina. Purpose of E/R Model. The E/R model allows us to sketch database schema designs. Includes some constraints, but not operations.

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785 views • 67 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 the design of a database informally. Designs are pictures called entity-relationship diagrams .

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706 views • 52 slides

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Entity set beers - PowerPoint PPT Presentation

Managing external data Part 1 Design of Databases

Entity-Relationship Model*

Entity-Relationship Model