移动环境下查询处理的迁移模型  

Query-Shipping Model in Mobile Computing Environment

作　　者：吴震华[1] 陈纯[1] 林怀忠[1] 

机构地区：[1]浙江大学计算机科学与工程系,杭州310027

出　　处：《计算机科学》2002年第7期59-61,共3页Computer Science

摘　　要：移动数据库是数据库研究的最新领域之一。移动计算网络的逐步成熟和移动设备的日益普及刺激了在移动环境下应用需求的迅速增长.而嵌入式操作系统和移动/嵌入式数据库是支撑移动设备上应用的两大基础。和传统的分布式计算环境相比,移动计算环境有以下一些主要的特点: 1)移动性,移动设备可能在不同地方接通网络,而且可能在移动中进行计算。Relative scarce mobile device resources mainly limited the query strategy under mobile computing environment. Queries in distributed database system often adopt shipping model to balance the load between the nodes that take part in query action. So shipping model improves the performance of system. The suitable improvement query-shipping model may be very fit mobile computation environment particular that the resources are in short supply and communication condition is unsteadily. This paper proposes two kind query strategies under mobile computing environment : query shipping model under C/S architecture and query shipping model with cache. Their characteristics and suitable areas are also analyzed. The goals of query also are given.

关 键 词：移动数据库 数据查询 数据处理 迁移模型 移动环境 数据库管理系统 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]