This paper introduces the thought and the principle of the Service-Oriented Architecture,the principle of the Model Driven Architecture,the essential component technology application technology and the characteristic of Open Source Software.

• 介绍了面向服务的体系结构(Service-Oriented Architecture,SOA)的思想和原则、模型驱动架构(Model Driven Architecture,MDA)原理、构件技术应用关键技术、开源软件特性;