A Structured Data Model and Application Research on Workflow

To present hierarchically and manage the workflow data information,a structured data model(SDM) is proposed.It can organize the workflow data into document information form(DIF) by the data type of serial,parallel,condition and loop.The mathematical definition of these data types is given in this paper.Tree structure is used to organize and describe the DIF.The paper studied a method which can directly generate composite form through SDM.This form contains not only the attributes that needed to be processed,but also the hierarchical relationships between attributes,which is friendly and easy for terminal users.