嵌入式内存数据库的恢复及重装算法研究  

Research on recovery and reload algorithm of embedded main memory database

作　　者：李蔚[1] 马江涛[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450002

出　　处：《微计算机信息》2007年第04Z期92-93,88,共3页Control & Automation

基　　金：河南省科技厅项目(0424220008)

摘　　要：在嵌入式内存数据库系统中,系统崩溃时数据库主拷贝存于易失性内存中,因此需要把数据库主拷贝从外存重装到内存。本文在嵌入式内存数据库恢复技术的基础上讨论了几种重装算法,提出了嵌入内存数据库的数据优先级重装算法,并进行了实验验证。结果表明,数据优先级重装算法比顺序重装算法性能高。　In an embedded main memory database,the primary copy of the database is stored in a volatile memory when a crash occurs,a reload of the database from archive memory to main memory must be performed. It is essential that an efficient reload scheme be used to ensure that the expectations of high performance database systems are met. This paper discussed several reload algorithms in the foundation of database recovery,and accomplished a data priority reload algorithm in embedded main memory database systems. The experiment indicated a data priority reload algorithm is higher performance than ordered reload algorithm.

关 键 词：嵌入式内存数据库 日志 检查点 重装算法 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]