导　　师： 李宏

学科专业： 081203

授予学位： 硕士

作　　者： ;

机构地区： 中南大学

摘　　要： 在数字校园的建设中,由于各种原因,各部门根据各自的信息要求和特定的应用开发了基于不同平台和数据源的信息系统。如何将这些信息系统进行集成,实现集成数据共享,给全校师生提供一个统一的集成共享平台,对于数字校园建设具有重要意义。 为解决数字校园建设中异构数据集成这一关键问题,本文首先介绍了数据集成的研究现状,然后分析介绍了数据集成需要解决的主要问题以及常用的数据集成方法和技术,同时简要介绍了本体技术以及XML技术,最后提出了基于本体和XML模式的异构数据集成实现方案。 为实现以上解决方案,作者主要从以下三个方面进行了研究,一是本体的构建以及模式的转换与集成;二是全局查询与分解;三是局部查询与优化。其中,重点分析研究了异构数据集成中要解决的关键技术,包括校园数据局部本体和全局本体的构建、关系模式与XML模式间的转换以及XML模式间冲突的解决、XQuery全局查询语句的有效分解、局部查询的解析以及实现等。同时,结合湖南科技学院异构数据集成建设总体目标、要求以及特点,作者提出了基于本体和XML模式的数据集成体系结构,搭建并实现了湖南科技学院数据集成共享平台,较好地实现了异构数据的集成统一管理和共享查询。 本文提出的基于本体和XML模式的异构数据集成解决方案,不仅对于学校异构数据的集成共享,而且对于政府、企业、公司等部门异构数据集成共享具有借鉴意义。 In the construction of digital campus, for various reasons, all departments develop information systems based on different platforms and data sources in accordance with their information requirements and specific application. How to integrate these information systems, to realize the integrated data sharing, and to provide all the teachers and students with a unified integration sharing platform, is of great significance for the construction of a digital campus. To manage the crucial issue of heterogeneous data integration in the digital campus construction, this paper firstly introduces the status quo of data integration; then analyzes the major problems which need to be solved, common methods and techniques in the data integration; and briefly introduces the ontology and XML technology; lastly proposes an outline for the practical programme based on the ontology and XML Schema of heterogeneous data integration . To achieve the above solutions, the author carried out a research concentrated on the following three aspects. First, the Ontology construction and the conversion and integration of mode; Second, the general enquiries and their decomposition ; and third, the partial enquiries and optimization. Core issue is the analysis of critical technology to be solved in the heterogeneous data integration, which includes: the building of partial ontology and overall ontology of campus data; their conversion between the relation model and the XML schema and the conflict resolution of XML schema; the effective decomposition of xquery overall enquiry language; the analysis and realization of partial enquiries. Meanwhile, with the overall objectives ,the requirements as well as characteristics of heterogeneous data integration construction in Hunan University of Science and Engineering, the author proposes the data integration system structure based on the ontology and XML schema, constructs and realizes the data integration sharing platform of Hunan University of Science and Engineering, and achieves a better

关 键 词： 本体 模式 数据集成

领　　域： [自动化与计算机技术] [自动化与计算机技术]