Abstract: Real-time data query processing has been widely used in industry information platform. XML is fast emerging as the dominant uniform data standard for representing data from every sub-system. This paper explores the more conservative approach of using traditional relational database engines for processing XML documents conforming to document type descriptors (DTDs). The paper develops a set of data models, transform rules, and algorithm descriptions to implement a prototype system that converts XML documents to relational tuples. It achieves the possibility of real-time data uniform description based on XML and query processing mechanism.

Key words: Real-time data uniform description, XML, DTD graph, Element graph, Relational database

摘要： 实时数据查询技术在工业企业信息平台中具有广泛的用途，XML数据标准能够实现各子系统数据的统一描述。该文用成熟的关系数据库查询机制处理符合DTD的XML文档，提出了一整套数据模型、转换规则、算法描述，可以将XML文档转换为关系元组，从而达到用XML实现基于关系数据库的实时数据一致性描述和查询处理的目的。

关键词: 实时数据一致性描述, XML, DTD图, Element图, 关系数据库

CLC Number: 

• TP311