Abstract : this paper we introduces the background of virtual database technology ， especially in the technology architecture of virtual database , including the data integration system and the data publishing system . based on an example of virtual database technology application , it describes a bright prospect of this technology 文摘:介绍了虚拟数据库产生的背景，着重分析虚拟数据库技术的体系结构，包括数据集成系统和数据发布系统，并结合运用虚拟数据库技术的实例，阐明了此技术的发展前景。
Based on the architecture , the paper discuss the component split principle and component design principle , and point out the technology of realize database base on the virtual database . in this dissertation , theory and methodology of information system software development have been founded 并在该体系结构的基础上论述了工艺信息系统组件拆分原则和工艺信息系统组件设计原则，并且提出了基于虚拟数据库的数据库实现技术，建立了可用于指导工艺信息系统软件开发的理论和方法体系。
Making use of powerful function of mobile agent and xml to virtual database , not only can reduce the amount of data transmission in internet and response time of integration system , allow network " s disconnection in some case , but also can simplify the implementation of integration system , speed up spread and share of information resources , hasten the innovation and development of virtual database technology 将移动agent和xml技术强大的功能应用于虚拟数据库，不仅可以减少在网络上的数据传输量、降低响应时间以及允许网络的间断连接；还可以简化集成系统的实现，促进信息资源的传播与共享；进一步推动虚拟数据库技术的创新与发展。
These components are categorized into two types : one is to serve the management of distributed information , including the virtual database querying component and the dynamic data supervising component ; another is to serve the distributed parallel computing in power system , including the matrix fraction component and the parallel computing component 这些组件按用途可分为两类:一类是服务于分布式信息管理的虚拟数据库查询组件、动态数据监控组件;另一类是服务于电力系统分布式并行计算的矩阵分割组件、并行计算组件。
