基于MHBT的数据库隔离与恢复模型

新时期随着信息化技术的高速发展,网络普及率惊人的速度增长,网络应用软件的访问时间几乎遍布于全天的各个时间,随之带来的是对基础支持类软件——数据库可生存性的新属性要求,即要能够持续不间断的提供服务,即使是在受到某些恶意攻击时.传统的数据库恢复技术在执行恢复任务时都需要数据库停止工作,并且恢复操作是基于检查点,即恢复检查点之后的所有事务操作,盲目性强,耗费时间较多.本文通过对当前数据库可生存性研究中隔离与恢复研究的分析总结,提出了基于MHBT树结构的数据库隔离与恢复技术,并通过对模型的数学分析评估了其运行效率.

A MHBT-Based Damage Quarantine and Recovery Model for Database

With the rapid development of information technology, network coverage rate increased at an astonishing speed. The network application software access time almost throughout all the day, as a result, database, the base of support software, needs new attribute-survivability. Survivability is that database provides uninterrupted service, even when there has some malicious attacks happened. The traditional database recovery technology needed database to stop working in the implementation of recovery tasks. The recovery operation is based on The Check Point, it need to recover all the transaction operation after The Check Point, blindness and waste more time. We analyzed the current quarantine and recovery technology of database, and put forward a quarantine and recovery technology base on MHBT. And through the mathematical analysis, we assessed the model＇ s running efficiency.