The conceptual map, cognitive map and mind map are the useful explorations where visualization technology has been pursued in the knowledge organization.
而概念地图、认知地图和思维导图则是可视化方法在知识组织中的有益探索。
Thirdly, the conceptual model of map database and administrative mode of map complex object are designed.
第三，设计了地图数据库的概念模型和地图复杂对象管理模式；
When using legacy data in a conceptual model, it is sometimes useful to be able to map a single entity to two tables in the database.
在概念模型中使用旧式数据时，有时可以将一个实体映射到数据库中的两个表会非常有用。
When using legacy data in a conceptual model, it is sometimes useful to be able to map a single entity to two tables in the database.
在概念模型中使用旧式数据时，有时可以将一个实体映射到数据库中的两个表会非常有用。
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