A Dependence-Based Transaction Model in Workflow

Transaction management is introduced into the Web service-based workflow of dynamic virtual enterprise. Based on the research of the present status and characteristic of long transaction model in workflow system, we find the Sagas model does not support portion rollback. So a long transaction workflow model based on task dependent information is presented. According to the classification of compensation attribute of transaction and the dependent relation of transactions, the strategy of portion rollback in long transaction of workflow process is realized.