Aiming at the characteristics of long - term task in workflow , a workflow transaction model based on backward recovery was surveyed , which could avoid the situation of reading dirty data , simplify confliction analysis , and provide efficient workflow transaction management 針對(duì)工作流的長(zhǎng)時(shí)間作業(yè)的特點(diǎn),論文提出了一個(gè)基于向后恢復(fù)的工作流事務(wù)模型,可以避免讀臟數(shù)據(jù)以及簡(jiǎn)化事務(wù)沖突分析,實(shí)現(xiàn)高效率的細(xì)粒度的工作流事務(wù)管理。