摘要
分析了现有工作流事务理论和技术,针对执行效率较低的问题,在改进确认和补偿机制的基础上提出了基于向后恢复、支持嵌套事务的将补偿模型与原流程模型整合在一起的事务模型构建规则和算法.实现了细粒度工作流事务管理,避免了读脏数据和由此而引起的连环回滚,简化了锁定和冲突分析,从而在保证可靠性的前提下提高事务管理的效率.
Contemporary techniques on workflow transaction are surveyed. Aiming at the issue of inefficiency, a workflow transaction model based on backward recovery is proposed in the paper. In the model, an improved confirmation and complementation mechanism is adopted, and the compensation model is integrated with the original process model to support fine-grained transaction management. This method has the advantages on avoiding complex computation such as consecutive rollback caused by reading dirty data, and making the locking and confliction analysis simplified. As a result, both the high efficiency and reliability are achieved.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2005年第6期1173-1178,共6页
Journal of Computer-Aided Design & Computer Graphics
基金
国家"八六三"高技术研究发展计划(2001AA415220)
关键词
工作流
事务
向后恢复
补偿
确认
workflow
transaction
backward-recovery
compensation
confirmation
