Entity Diagram Example. Age is a derived attribute for patient entity. Connecting lines solid lines that connect attributes to show the relationships of entities in the diagram.
Erd example crows s foot diagram. Name in the tests entity is a primary key. It shows the type of icons and graphics you can use to develop a model of a database of arbitrary complexity according to chen s notation.
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Er diagram example 1. For example in a university database we might have entities for students courses and lecturers. Entity relationship diagram examples. It shows the type of icons and graphics you can use to develop a model of a database of arbitrary complexity according to chen s notation.
