relational data model

Partial relational model is the extension of the relational data model in data domains.

偏序关系模型（Partial Relational Model）是对关系数据模型在序领域中的推广。

By means of extended relational database model, a view-based framework of constructing spatio-temporal data model is proposed to integrate the attribute of time and space.

通过扩展关系型数据模型，提出一种基于视图的时空数据模型构造方法，实现空间属性和时间属性一体化。

We also studied many problems on data integration for E-Government applications, such as, relational data model based on XML, XML data schema transforming, distributed transaction processing based on web services.

在电子政务系统数据集成的问题上，本文研究了关系型数据的XML表示、XML数据模式变换和基于Web Services的分布式事务处理问题。

Relational figure language is one way to express the operation of relational data model.

关系演算语言是表达关系数据模型中的数据操作的1种方式.

First of all, this paper investigates research status of fuzzy relational database and properties of vague set, and then puts forward a generalized fuzzy relational data model on vague set ( VGFRDM) and a fuzzy database structured query language on vague set ( VFSQL).

本文首先探讨了模糊关系数据库的研究现状和Vague集的性质，然后提出了基于Vague集的广义模糊关系数据模型VGFRDM和基于Vague集的模糊数据库查询语言VFSQL。

On this basis, the authors give the mapping rules between main elements in DTD of XML document and relational data model; and design the algorithm for the autogeneration of conversion rule script and the algorithm for data conversion.

给出XML文档的DTD中各主要元素与关系数据模型之间的映射规则，设计转换规则脚本的自动生成算法和数据转换算法。

A translator to convert relational data model to XML documents

一个从关系数据模型到XML文档的翻译器设计

However, relational data model is major used to deal with well-defined and clear data, but real-world data is often vague, incomplete and uncertain.

但关系数据模型处理的主要是具有良好定义的、清晰明确的数据，而现实世界中的数据通常是含糊的、不完全的、不确定的。