关键词: 服务组件架构, 组合件, 面向服务架构

Abstract: Hetero-structure and integration are always problems of a DNC system. Service component architecture provides a good specification and solution to eliminate these two problems. The main business functions of the DNC system were ascertained after referring to all kinds of documents and lots of DNC business systems, and a model of the DNC system based SCA specification was subsequently worked out. This model consists of  four layers: application layer which provides service interfaces for other applications, a service layer which offers services of business functions, a composite layer which supplies composites for services and an implementation layer which gives business logic and basal datum for composites. In addition, a detailed introduction concerning implementation by Java for the composite of initializing communication between serial ports and computers was provided.

Key words: service component architecture, composite, serviceoriented architecture