【作者】 韩中；

【导师】 孙世新；

【作者基本信息】 电子科技大学 ， 计算机软件与理论， 2003， 硕士

【摘要】 当今社会已进入了信息时代，人们将越来越多的信息存储在网络中的计算机上。如何更有效地存储、管理、提取信息，实现信息的共享，已经越来越引起人们的关注。数据库(DB)及数据库管理系统(DBMS)是管理信息资源的重要工具,数据库技术在信息管理和计算机研究中占首要位置,它是计算机科学的主要领域之一,90%以上的应用离不开数据库技术。近年来，各种各样的新技术应运而生，分布处理（Distributing process）的技术也从多个处理机的系统领域渗透到数据库技术中，并掀起分布式数据库（Distributed database）研制与开发的热潮。本论文首先介绍分布式数据库系统的有关概念和理论，以某财政局使用Sybase建立的客户机/服务器模式的协作式分布式数据库系统为例，就分布式数据库系统、数据分片、分布技术及数据库连接等问题进行深入的研究探讨。同时分析了Web三层乃至n层（包含对象/组件技术）结构模式的发展状况。其次结合该财政局财政管理系统，介绍采用Sybase企业级的Web分布式开发环境Sybase EA Studio，运用B/S模式的对象组件模型技术、用纯Java开发的Sybase EA Studio作为组件服务器、用PowerDynamo作为应用服务器的全部实现过程。另外，阐述了在任何一个数据库系统中、都不可避免的系统安全性问题的实施策略和解决方案。通过初步的开发和应用，所设计的Web分布式财政管理系统基本上达到了理论设计要求，运行结果表明，用Sybase EA Studio建立金融系统的分布式数据库方案是切实可行并具有良好的应用和发展前景。更多还原

【Abstract】 As the information age has come，people store more and more information in computer. How to store，manage , extract information and share information effectively has become the focus of people. The Database and Database Manegement System is an important tool to manege information resource, database technology is the key issua in information management and computer research, It is a main field of computer science, application above per 90 can’t part database technology. Recently, all kinds of new technology emerge as the times require, distributed operate technology permeate to database technology from multiple manipulation computer, and start upsurge that distributed data research and develope.First this thesis introduces the concept and theory of Distributed DB and gives a deep discussion about data fragment，distribution and DB connection etc. Base on Distributed DB System which takes the C/S Cooperated Distributed DB constructed by using Sybase in some finance bureau as an example.it also analyses the development tendency of from two-layer to three-layer or more layers architecture model(including object /component technology) based on Web. Then relating the finance bureau finance management system, the thesis illuminates its thorough implement procedure using by web distributed development environment named Sybase EA Studio of Sybase Enterprise、 object component model technology of B/S model, taking Sybase EA studio developed completely by java as component server and using PowerDynamo as application server. This thesis also proposes implement strategy and solution scheme of system security problem which every database system can not avoid. Through first development and application, distributed finance management system designed based on Web approached the theory design requirement. It was proved by many operation instances that finance distributed database EA Studio is realizable and has good application and development prospect.更多还原