Support for ER diagrams.

[Werner]

PlantUML support ER diagrams although it is not yet documented.

* https://github.com/plantuml/plantuml/pull/31

Please add an ER Diagram sample to the editor – see below.

@startuml

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entity Entity {
* identifying_attribute
—
* mandatory_attribute
optional_attribute
}

‘ zero or one
A |o–o| B

‘ exactly one
C ||–|| D

‘ zero or many
E }o–o{ F

‘ one or many
G }|–|{ H

@enduml

Thanks,

Werner

[Author]

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