自修复数据库选择性恢复机制  

Selective Recovery of Self-healing Database System

作　　者：李静[1] 

机构地区：[1]天津财经大学珠江学院,天津300000

出　　处：《计算机系统应用》2011年第2期100-103,共4页Computer Systems & Applications

摘　　要：选择性恢复使得自修复数据库在发生用户错误操作或入侵事务导致的故障之后,只撤销错误操作或入侵事务以及受感染的可疑事务,而保留未受感染的合法事务。提出一种新的选择性恢复机制,使用事务依赖日志、写操作日志和事务语句日志,分别记录事务间的依赖关系、事务写操作的前像数据和事务执行语句,在故障发生后,可以使数据库恢复到故障发生前一刻的正常状态。Selective recover allows a self-healing database to undo only errors/intrusions and those suspect transactions affected by errors/intrusions, while preserving the unaffected transactions, after being compromised by a human error or a malicious attack. This paper presents a new selective recovery mechanism which records inter-transaction dependency information, before image dates written by each transaction and transaction statement, respectively by inter-transaction dependency log, write log and transaction statement log. The database can restores its consistency after being compromised.

关 键 词：自修复数据库 选择性恢复 事务依赖 入侵事务 可疑事务 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]