摘要
随着计算机技术的迅速发展,信息资源的异构性在各行各业的信息管理系统中无处不在,形成了大量的信息孤岛,这使得如何在复杂的应用系统中实现异构系统之间的互联、互访和数据共享成为一个重要的研究方向。针对当前各类信息系统之间缺乏有效的信息整合平台,信息集成度差的现状,提出采用虚拟数据库的信息集成方法为不同自治、异构、分布的数据提供一个统一的全局虚拟数据视图来实现各信息系统之间的透明访问。并结合电力系统的特点,使用数据仓库和虚拟数据库相结合的方法,提高了异构数据查询的效率。
With the rapid development of computer technologies, information source is heterogeneous which exists in every vocation information management system which causing a lot of single information-island. As the result, how to interconnect and data sharing among these heterogeneous systems is a very important research topic. Aiming at the current status of information systems that there is no effective integration platform, realize interoperation of various systems with provides a unified global view of data for various autonomous, heterogeneous and distributed data based on virtual database. And consider the characteristics of the power system,proposes a data warehouse - virtual database integration data schema, which improves query efficiency of the heterogeneous data.
出处
《计算机技术与发展》
2009年第6期87-90,共4页
Computer Technology and Development
关键词
异构数据
信息集成
虚拟数据库
heterogeneous data
information integration
virtual database
