PROTEUS DDB分布式数据库

The Proteus Distributed Database System

本文介绍一种异型机种、不同数据库类型的分布式数据库的组织结构。该系统采用“公用内部网络查询通讯语言”NQL(Network Query Language)和“网络数据模式响应语言”NRL(Network Response Language)解决了系统内不同类型的三种结点(数据结点、查询结点和主结点)之间的通讯,并通过各查询结点和数据结点上“内部→外部”和“外部→内部”变换的例行程序,完成了各结点外部信息与网络内部信息的相互转化。重点论述PROTEUS DDB系统的组织结构和软件实现与分析。

This artical is devoted to discussion of a distyibuted, database system (DDB) which is a heterogeneous DDB. It has been designed and developed as a result of a collaborative research project involuing a number of Britisb universities