一种自适应实时事务并发控制新方法  

An adaptive concurrency control method for real-time transactions

作　　者：程云志[1] 

机构地区：[1]河南大学计算机与信息工程学院,开封475001

出　　处：《信息技术》2010年第4期88-90,共3页Information Technology

摘　　要：传统的基于锁的并发控制机制重点考虑数据的一致性和事务的并发度,不能很好地满足实时数据库系统对时态一致性的要求。结合锁,多版本和有效性确认等并发控制机制,提出了一种并发控制的新方法——自适应多版本实时事务并发控制方法:AMVCC。此并发控制方法可根据具体情况自适应地采用不同的并发控制机制,能够有效提高事务的并发度和截止时间内完成事务的数量。通过可行性分析知:此方法在性能上优于传统基于锁的并发控制方法。The traditional lock-based concurrency control mechanism emphasizes the data consistency and the concurrency performance,it does not primely maintain the demand for the temporal consistency of the real-time database system. This paper presents a new concurrency control method for real-time transactions--adaptive multi-version concurrency control method（AMVCC） which is based on the locking,multi-version and validity confirmation. This method can adopt the different concurrency control mechanism according to the idiographic situation and increase the amount of the transactions which is completed within the deadline. The feasibility analysis denotes that AMVCC is better than the traditional lock-based concurrency control method on performance.

关 键 词：实时数据库 实时事务 并发控制 截止时间 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]