摘要
在并行实时数据库中,并发控制协议不仅要满足数据库一致性约束,而且要满足时间约束。本文提出了实时多版本两阶段封锁并发控制协议,它能有效地减少延误截止时间事务数量。作者通过仿真模拟,在共享磁盘体系结构下与HP2PL和OCC TI WAIT 50协议进行了比较。实验结果表明,该协议比HP2PL和OCC TI WAIT 50协议性能更好。
In parallel realtime database systems, concurrency control protocols must not only maintain the consistency constraints, but also meet time constraints. The article presents a multiversional twophase locking concurrency control protocol. It can effectively reduce the number of transactions that miss their deadlines. We compare the protocol presented with the HP2PL protocol and the OCCTIWAIT50 protocol under the shareddisk architecture by simulation. The experimental results show that the protocol performs better than the other two.
出处
《计算机工程与科学》
CSCD
2003年第4期46-49,共4页
Computer Engineering & Science
基金
国家863计划资助项目(511-910-092)
关键词
并行数据库系统
实时数据库
并发控制协议
多版本两阶段封锁协议
事务处理
parallel database system
real-time database
shared-disk architecture
concurrency control
multiversional two-phase locking protocol
