从共享主体与范围、信息获取与传输和信息共享与交换三个方面描述电子政务环境下政府信息资源共享交换的需求特征,将参与信息共享交换的外部实体与应用系统抽象为信息传输路径上的节点,各节点间的信息共享交换通过远程调用、对象处理、数据访问和事务请求等机制予以实现,同时利用XML实现上述机制中需应用的信息资源格式转换与传输。 Describes the demand characteristics of government information resources sharing exchange under the environment of e-government from three aspects of sharing subject and scope, information acquisition and transmission and information sharing and exchange, and abstracts the external entities and application systems participating in information sharing exchange as information transmission path Node and information exchange between nodes are realized through mechanisms such as remote invocation, object processing, data access and transaction request, and meanwhile, XML is used to realize the format conversion and transmission of information resources to be applied in the above mechanism.