摘要： 将移动Agent 技术引入分布式数据服务领域，借鉴传统分布式数据查询策略和现有基于移动Agent 模型的做法，提出了基于MA的分布式数据服务模型，并在此基础上，详细描述了处理流程。该模型已被应用于在线购物系统中的分布式数据析取模块中。实验表明，与传统的分布式模型相比，该模型在站点多、数据析取量大的情况下有明显的优势。

关键词: 移动Agent；分布式数据服务；网络购物系统

Abstract: The mobile agent technology is used to improve the efficiency of the distributed database service model. And the whole model, the procedure and the key sub-models are described. The model is used in one on-line shopping system as a data-getting sub-model. Compared to the counterparters, the model works efficiently with the more stations and large amount of the data-getting.

Key words: Mobile agent; Distributed database service; On-line shopping system