PlantUML Language specification Information Engineering

       

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实体关系图

• 信息工程符号的额外关系。
• 一个映射到类图的entity 别名class 。
• 一个额外的可见性修改器* ，用于识别强制属性。

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信息工程关系

@startuml Entity01 }|..|| Entity02 Entity03 }o..o| Entity04 Entity05 ||--o{ Entity06 Entity07 |o--|| Entity08 @enduml

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实体

@startuml entity Entity01 { * identifying_attribute -- * mandatory_attribute optional_attribute } @enduml

@startuml entity Entity01 { optional attribute **optional bold attribute** * **mandatory bold attribute** } @enduml

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完整的例子

@startuml ' hide the spot hide circle ' avoid problems with angled crows feet skinparam linetype ortho entity "Entity01" as e01 { *e1_id : number <<generated>> -- *name : text description : text } entity "Entity02" as e02 { *e2_id : number <<generated>> -- *e1_id : number <<FK>> other_details : text } entity "Entity03" as e03 { *e3_id : number <<generated>> -- e1_id : number <<FK>> other_details : text } e01 ||..o{ e02 e01 |o..o{ e03 @enduml