多数据库中间件上推规则与上推机的设计与实现

Design and Realization of the Local Database Push-pull Mechanism and Up-pusher in Multidatabase Middleware

研究了局部数据库中上推数据的内容、获取和描述,定义出描述局部数据库中上推数据的XML模式,作为集成机和局部数据库上推代理之间的通信规范,以此为基础实现中间件中的上推机.

This paper analyzes the content, extraction and description of the up-pushed data in local database. It defines the XML schema ofthe up-pushed data description in local database by DTD which is used as the up-push rules and communication standard between the agent of local database and the integrator. Based on it the up-pusher is realized.