一种分布式信息系统的构件模型及其应用研究

The Application and Research of CORBA Components in Distributed Information System

1.引言 随着企、事业信息系统分布式应用需求的不断增长,大型分布式信息系统软件的开发难度在不断提高,项目失败的可能性也相应地增加.大型分布式信息软件系统的开发经常需要利用已有的成果,集成不同系统的标准软件包,通过集成来减少不必要的重复工作,提高软件的可用性,加快开发进度.

With the extension of enterprise business and the increasing requirement in distributed application, the implementation of information system becomes more difficult which may lead to larger failing possibility of project. How to develop an effective and strong system and how to enhance its reliability and maintainability are questions for discussion. As a result, the component-based software development approach is proposed. In this paper, we introduce one of those architectures and give a developing methods based on Corba components with a realistic example, and discuss the process of developing distributed information system.We raise a new information system-oriented component model and the component design methodology, which are analyzed with formal description.