基于三层结构的企业级GIS中数据对象的构建方法研究

网络技术和分布式计算技术的发展,使得信息系统从桌面转向企业级。企业级应用具有用户数多、数据量大、业务多变、对可扩展性和安全性要求较高等特点,使得系统体系结构设计成为系统成败的关键。本文介绍了系统体系结构演化的过程,阐述了基于三层体系结构的优点和构建数据对象的必要性;在分析了地理信息系统(GIS)数据源特点的基础上,提出了构建符合企业级GIS要求的数据对象的原则和方法。

Study on the Approach of building data objects for Enterprise GIS Based on Three-tiered Achitecture

The development of the technology in network and distributed computing makes the information system turning to the enterprise application from the desktop. Large numbers of users, huge datum, flexible business procedure and high request of extensibility and security have been the features of enterprise application, and all these features make the design of system architecture become the critical of success of a system building. This paper introduces the development of system architecture, the virtue of the system architecture based on 3tiered and the necessity of building data object. After analyzing the particularity of GIS data source, we give an approach and the principle of building data objects to fit for the requests of enterprise GIS.