Figure 18 shows how you can model a Use Case Storyboard using a UML Collaboration that is described with a State Machine.

图18中显示了您如何通过使用由一个状态机所描述的UML协作来建模一个用例情节串联图板。

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Getting the system requirement model by using use case model in UML, and making further system analysis by using class diagram and package diagram in UML.

以uml中的用例模型得出了系统的需求模型；以uml中的类图和包图对系统作进一步的分析。

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Firstly, through using the UML to build the use-case diagram of each model to analyse the system, it designs the data flow and the databases for the buying-stock-selling system.

首先通过对系统进行用例分析，运用UML建立起系统各模块的用例图，并对进销存系统的数据流程、数据库进行详细的分析与设计。

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