创建概念数据模型和信息架构。
业务实体是概念数据模型的基本构建块。
Business entities are the fundamental building block of the conceptual data model.
在SOA项目中，概念数据模型的开发几个目的。
The development of a conceptual data model has several purposes within the SOA project. The main reasons for developing a conceptual data model in the SOA project are.
概念数据模型是从最高层抽象看到的规范化数据模型。
A conceptual data model is a canonical data model viewed at the highest level of abstraction.
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。
This conceptual data model is the basis for both current and future phases of data warehouse development.
有证据显示，没有人建立过可靠的概念数据模型，这是个经常发生的问题。
There also is evidence that no one ever produced a reliable conceptual data model. The problem commonly occurs.
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。
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。
The conceptual data model typically is coarse-grained and is intended to show the broad set of entities and relationships under consideration.
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。
All you need to do is to generate the physical data model that corresponds to your conceptual data model.
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。
While not always a part of the conceptual data model, a few major attributes may be defined for illustration purposes.
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 defines the major business entities, generalizations of those entities, and relationships between the entities.
实体数据模型(EDM)是一种概念数据模型，能被用来对特定的领域进行数据建模。因此应用程序能和作为实体或对向的数据相匹配。
The Entity data model (EDM) is a conceptual data model that can be used to model the data of a particular domain so that applications can interact with data as entities or objects.
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.
数据模型没有表示文本节点中的单词或符号的概念；它只是将元素或属性的文本内容表示为一个后续节点。
The data model has no notions of words or tokens inside a text node; it just represents the textual content of an element or attribute as one contiguous node.
这个数据模型描述了一个相当简单的定制汽车服务的概念。
This data model describes a much-simplified notion of an order for automobile service.
单项概念 —程序集数据模型中的一个项目描述一个与原始类型对应的原始值。
Single item concept — An item in the assembly data model describes a single primitive value that corresponds to a primitive type.
这会帮助驱动概念和逻辑数据模型的定义。
This eventually helps drive the definition of conceptual and logical data models.
在概念模式后出现的是逻辑模式——用更多的细节定义概念，并显示实体之间的关系的数据模型。
After the conceptual schema comes the logical schema — the data model that defines the concepts with greater detail and shows the relationships between the entities.
到目前为止，已经介绍了逻辑数据模型、领域模型和物理数据模型的概念。
You have so far seen the concept of logical data models, domain models, and physical data models.
虽然概念数据建模和逻辑数据建模会产生两个不同但是相关的数据模型，但更常见的是，它们是在同一个数据模型上进行的两个连续分析阶段。
While conceptual and logical data modeling may result in two separate yet related data models, more often, these are two sequential phases of analysis acting upon the same data model.
概念化数据建模驱动规范化数据模型中最初宽度的规范，而逻辑数据建模则在同一个模型中增加进一步的细节。
Conceptual data modeling drives the initial broad specification within the canonical data model, and logical data modeling adds further detail within that same model.
本文讨论用于XFDL表单的XML数据模型概念。
This article discusses the concept of an XML data model for the XFDL form.
RDA提供了大量的功能在概念、逻辑和物理级别上定义数据模型，并且可根据需要在uml与informationEngineering标记法之间转换。
RDA provides extensive capabilities to define data models on a conceptual, logical and physical level and to convert between UML and Information Engineering notations as needed.
模型(Model)-支持概念、逻辑和物理数据模型。
Model - Supporting conceptual, logical, and physical data modeling.
在本文中，学习XML数据模型概念，对XML数据模型和XForms模型进行比较，并学习创建XML数据模型的步骤。
At the end of this article, you learn about the XML data model concept, assess a comparison of XML data model and the XForms model, and follow the steps to create an XML data model.
例如，它可以在逻辑模型与物理模型之间映射，也就是规范化数据模型的概念与这些概念在数据平台中的实现之间的映射。
For example, it can map between a logical and physical model, that is, between the concepts of the canonical data model and the realization of these concepts in the data platform.
业务名称用在概念性或逻辑数据模型中。
Business names are used in conceptual or logical data models.
单一列表概念—程序集数据模型中的一个列表描述数据中的一个新层面。
Single list concept - a list in the assembly data model describes a new dimension in the data.
在不得不修改概念性或逻辑数据模型时，可以轻松地重新创建依赖的模型，让所有JPA实体保持同步。
When you have to change the conceptual or logical data model, you can easily recreate the dependent models and have all your JPA entities in sync.
在不得不修改概念性或逻辑数据模型时，可以轻松地重新创建依赖的模型，让所有JPA实体保持同步。
When you have to change the conceptual or logical data model, you can easily recreate the dependent models and have all your JPA entities in sync.
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