OMT (Object Modeling Technique) is an Object-Oriented conceptual set and that is a graphical notation independent of programme, which includes Object-Model, Dynamic-Model and Function-Model.

对象模型技术(OMT)是一种面向对象概念集以及与编程无关的图形表示法，包括对象模型、动态模型和功能模型。

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Compared with several other data models used in early and recent GIS, the author gives his own idea of what is a geographical space, and then puts forward a new object-oriented conceptual data model.

本文在分析和总结了早期和近期GIS几种数据模型的优缺点的基础上，对地理空间进行了重新理解，给出了一个面向对象的概念数据模型。

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