Research On Workflow Modeling And Its Implementation Based On Directed Graph

Based on the summarization of requests in the workflow model and the analysis of the deficiencies of present workflow modeling methods, a workflow modeling method and a running arithmetic of workflow instance are put forward from the point of characteristic of business process to avoid the deficiencies of present workflow methods in the support of automation executing model analysis and model description of business process. Firstly, workflow modeling method based on directed graph is put forward, descriptive elements of the modeling method are used to express executing logic of business process visually and clearly, and common users use the method conveniently;secondly, a compositive workflow model is designed, the model is composed of many child models, such as process model and function model, designed workflow model gives general description about all elements of business processes, such as executors execution rules;thirdly, relative analysis methods are present in two aspects of correctness validation and performance analysis;At last, a running arithmetic of workflow instance is brought forward, the arithmetic may execute all kinds of business process logically and exactly.