Cardinality notation - PowerPoint PPT Presentation

Data modeling using E/R diagramming

Data modeling using E/R diagramming. Why analyze data? Notation for E/R Entities with attributes Types of attributes Relationships Cardinality History / things evolve Total participation Weak entities Steen Jensen, autumn 2013. Why analyze data?.

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405 views • 21 slides

Database Design--Topics

Database Design--Topics. DB Design Steps Identify Relationships M:M Relationships. Database Design Steps. Identify “Information Elements” Identify Entities Identify Primary Keys Identify Relationships Fix Relationship Problems Identify Non-Key Attributes Fix Attribute Problems

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201 views • 18 slides

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