Adopting the object-oriented design method, the detail design of some modules is given, which includes use case design, concept model and sequence diagram.

采用面向对象的设计方法，对部分模块给出了详细设计过程，包括用例设计、概念模型和顺序框图。

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Define the concept of version design knowledge, establish version management model based on design knowledge, obtain and use knowledge information in general version.

提出版本设计知识的概念，建立基于设计知识的版本管理模型，对广义版本中的知识信息进行获取和使用。

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In order to adapt to the design requirement of spatiotemporal database, this article proposes a new spatiotemporal er enhanced model and introduces its relevant concept as well as design method.

为了满足时空数据库设计的需要，提出了新的时空er模型并给出了相关的概念及设计方法。

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