| 本文已被：浏览 4876次 下载 6453次 |
码上扫一扫！ |
|
|
| 基于数据时态特性的实时事务并发控制 |
|
韩启龙1, 郝忠孝1,2,3
|
|
1.哈尔滨工业大学,计算机科学与技术学院,黑龙江,哈尔滨,150001;2.哈尔滨理工大学,计算机科学与技术学院,黑龙江,哈尔滨,150080;3.齐齐哈尔大学,计算机学院,黑龙江,齐齐哈尔,161006
|
|
| 摘要: |
| 通过对数据时态特性及其对事务调度的影响进行分析,提出了基于数据时态特性的实时事务并发控制算法.该算法根据数据截止期及事务的执行时间估算,改进了事务的验证规则,对事务的提交顺序进行调整,提高了系统的实时性能.理论分析与实验结果表明:该算法降低了事务重启个数及超截止期百分率,性能要优于已有的实时并发控制算法. |
| 关键词: 主动实时数据库 并发控制 数据截止期 验证因子 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the Natural Science Foundation of Heilongjiang Province of China under Grant No.F00-06 (黑龙江省自然科学基金) |
|
| Real-Time Concurrency Control Protocol Based on Accessing Temporal Data |
|
HAN Qi-Long,HAO Zhong-Xiao
|
| Abstract: |
| After analyzing the temporal data characteristics and the effects on scheduling transaction, a real-time concurrency control protocol is proposed, which improves the performance of real-time systems by evaluating data-deadline and transactions execution time, improving transactions validation rules, and adjusting transactions committing order. Theoretical analysis and experimental results demonstrate that the new protocol reduces the transaction restarts numbers and the miss deadline percentage, and outperforms the previous ones. |
| Key words: active real-time database concurrency control data-deadline validation factor |
