摘要
一、引言 开放系统互连概念的提出及有关标准的制定使开放型计算机网络开始出现,然而这种开放型网络尚不足以成为分布式处理的支撑平台,因为OSI模型只是针对对等(peer-to-peer)通信问题,实际描述的是系统通信接口的行为,不能表达系统内对象的任意配置,即不能区分系统之间的关系,从而也是与对象的语义完全无关的。因此除了通信机制之外,分布式系统还需要信息共享机制和对象控制机制的支持,要解决分布式系统的开放性问题,就必须使相关机制都具有开放性。
The basic reference model of ODP specifies an architectural framework for the development of open distributed processing systems. The BRM is classified as descriptive model and prescriptrve model. The former gives out five different viewpoints for the construction of ODP systems,as well as the general behaviour concepts for the systems, the latter defines the basic concepts and structing rules of the specification languages corresponding to the five viewpoints. The basic concepts and the architectural framework of ODP basic reference model is introduced in the paper.
出处
《计算机科学》
CSCD
北大核心
1994年第4期15-18,共4页
Computer Science
