The GIS semantic data modeling approach has been used as a tool to design the needed conceptual model.

采用语义数据模型的方法，提出利用地理特征这一概念作为建模的基本概念。

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A semantic data modeling technique is employed to represent the logical organization of engineering design data.

本文采用语义数据建模技术表示工程设计数据的逻辑组织结构。

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Semantic information modeling (ontology) moves beyond structural, logical data modeling in the sense that it models semantics (meaning) and relationships of data.

语义信息建模(本体)不属于逻辑数据建模，它对数据的语义(含义)和关系建模。

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