A conceptual data model is a canonical data model viewed at the highest level of abstraction.
概念数据模型是从最高层抽象看到的规范化数据模型。
This conceptual data model is the basis for both current and future phases of data warehouse development.
这个概念数据模型是当前和将来数据仓库开发阶段的基础。
While not always a part of the conceptual data model, a few major attributes may be defined for illustration purposes.
为了便于演示，可以定义一些主要的属性，不过概念数据模型中不一定非得这样。
The conceptual data model defines the major business entities, generalizations of those entities, and relationships between the entities.
概念数据模型定义主要的业务实体、这些实体的泛化（generalization）以及实体之间的关系。
The conceptual data model is created during the initial phases and typically includes only entities and their most important relationships.
概念数据模型是在初始阶段创建的，通常只包括实体和它们最重要的关系。
All you need to do is to generate the physical data model that corresponds to your conceptual data model.
唯一还需要做的事情就是生成与概念数据模型相对应的物理数据模型。
The conceptual data model typically is coarse-grained and is intended to show the broad set of entities and relationships under consideration.
概念数据模型通常是粗粒度的，其目的是显示所考虑的宽泛的实体和关系。
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。
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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