作　　者： ; ;

机构地区： 广东工业大学计算机学院

出　　处： 《计算机应用与软件》 2007年第11期100-102,共3页

摘　　要： 随着移动计算技术的发展,人们要求能够随时随地实时存取数据库的数据,这就导致了移动分布式实时数据库(MDRTDBS)的实现。移动实时应用的根本特性是其事务具有移动性和实时特性,数据具有定时特性。这对移动分布式实时数据库并发控制协议提出了新的挑战,目前这方面的研究还很少。对实时数据库的时标排序并发控制协议进行了分析,针对移动实时应用的特点对将它们应用到MDRTDBS的优缺点进行了阐述,提出了改进的方法。最后提出了新的适用于MDRTDBS的时标排序协议,并指出了未来的研究方向。 With the increasing use of mobile computers, and with the rapid development of mobile computing technology, people require having access to database systems at any time and any place. This leads to the realization of mobile distributed real-time database systems （MDRTDBS）. The essential characteristics of a mobile real-time transaction are mobility and its real-time nature. These are new challenges for MDRTDBS concurrency control protocols. Little research work has been done in this area till now. The application of timestamp ordering concurrency control protocols in MDRTDBS is analysed. The benefits and shortcomings are pointed out, and some ways are offered to improve the performance. Finally, a new timestamp ordering concurrency control protocol is proposed, which is more suitable for MDRTDBS. The future research direction is also offered.

关 键 词： 移动分布式实时数据库 并发控制 时标排序并发控制协议

领　　域： [自动化与计算机技术] [自动化与计算机技术]