移动Agent技术在分布式数据库系统中的应用

Researches on mobile agent application in distributed database systems

针对目前C/S模式下对大型异构分布式数据库查询效率不高的情况,提出基于移动Agent编程模式的分布式数据库管理系统(DBMS)的模型,同时将两段交付协议(2PC)扩展为三层协议(3TC)以提高通信效率。该模型可大大减少网络中的数据传输量,从而提高网络利用率,缓解数据传输瓶颈。

Traditional Client/Server model is ineffective when query of heterogeneous, large-scale distributed database is involved. This paper discusses a new model of a distributed DBMS based on the mobile agent programming paradigm. A Three-tier protocol based on the traditional 2PC protocol is employed to improve the communication efficiency. This model reduces data capacity transferred in the network greatly and significantly weakens the bottleneck of data transmission and reduces the execution time.