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。
A semantic data modeling technique is employed to represent the logical organization of engineering design data.
为什么不将数据建模为文档呢？这样可以不用死守严格的关系模式，而只需要大致遵循高级模式的语义。
Why not just model the data as a document, which doesn't necessarily fit into a rigid relational model but roughly follows the semantics of a high-level model?
逻辑数据和语义信息建模。
年2月份发表的第一期文章中讨论了语义透明性的目标，我认为这是XML数据建模最重要的方面。
In the first installment — in February 2001 — I discussed the goal of XML semantic transparency, which I think is the most important aspect of XML data modeling.
对于传统的数据源来说，通常需要投入大量人力物力，进行分析和数据净化工作，然后才能将其用于语义建模技术。
Legacy data sources are likely to require much human effort in terms of analysis and data cleansing before they can be availed to semantic modeling technologies.
语义建模技术，例如RDF，可以帮助简化对不同数据集之间自动进行推理所面临的问题，这些数据集是内嵌在数据存储介质中的。
Semantic modeling technologies, such as RDF, can help ease the problem of automatic reasoning between different data sets, provided that it is built-in to the data-store.
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。
Semantic information modeling (ontology) moves beyond structural, logical data modeling in the sense that it models semantics (meaning) and relationships of data.
建模员不应该假设数据的位置，值访问或者引用语义访问，也不应该假设任何清晰的并发管理设备。
Modelers should make no assumptions about the location of the data, call-by-value, or call-by-reference semantics nor any implicit concurrency management facilities.
建模器应当既不考虑数据的位置、是值呼叫还是引用呼叫语义，也不考虑任何并发管理工具。
Modelers should make no assumptions about the location of the data, call-by-value or call-by-reference semantics, nor any implicit concurrency management facilities.
通过这个实例可以看出，语义对象模型是一种建模能力很强，也是一种很接近用户的数据模型。
The example shows that the semantic object model is a kind of data model very capable of modeling and easily accessible to the user.
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。
The GIS semantic data modeling approach has been used as a tool to design the needed conceptual model.
对EXPRESS建模语言的核心功能作了概述，并给出了EXPRESS数据模型的一个形式化语义描述。
The primary contents are summarized as follows:An overview of the key functions of the EXPRESS modelling language as well as a formal semantic description of the EXPRESS data model is introduced.
对EXPRESS建模语言的核心功能作了概述，并给出了EXPRESS数据模型的一个形式化语义描述。
The primary contents are summarized as follows:An overview of the key functions of the EXPRESS modelling language as well as a formal semantic description of the EXPRESS data model is introduced.
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