嵌入式移动实时数据库管理系统的并发控制  

Concurrency Control of Embedded Mobile Real-time Database System

作　　者：卢炎生[1] 钟忺[1] 

机构地区：[1]华中科技大学计算机科学与技术学院,武汉430074

出　　处：《武汉理工大学学报》2009年第18期132-134,146,共4页Journal of Wuhan University of Technology

基　　金：国家部委重点科技攻关项目(513150402)

摘　　要：嵌入式移动实时数据库管理系统的并发控制机制通常是通过对传统数据库管理系统的并发控制机制的扩展和改进,并结合移动实时环境的研究成果得到的。移动环境具有移动性、断接频繁性、带宽不稳定性、通信不对称性和资源有限性等特点,而实时环境主要体现在定时性上。封锁是并发控制的常见部分,EMRTDBMS给封锁设计了一个管理器,在广播中指定了EMRTDBMS的多版本并发控制机制。Embedded mobile real-time database management system is usually obtained via the extension and improvement of concurrent control strategy in traditional database management system, combining with the research fruits in mobile real-time environment. Mobile computing owns the features like mobility, high frequency of disconnection, instability of bandwidth, asymmetry of network communication and limitation of resource, while real-time environment is mainly represented on timing. Locking is a common part of concurrent control. EMRTDBMS designs a management for locking. We specify its multi-version concurrent control mechanism in broadcast.

关 键 词：嵌入式移动实时数据库 并发控制 索引 广播 多版本 

分 类 号：TP292.3[自动化与计算机技术—检测技术与自动化装置]