Workflow Based On Petri Net Models And Applications

Workflow technology has been widely used in enterprises in recent years, which makes process automated in whole or part, so that standardize their management and improve efficiency. Workflow technology will be applied to the school office automation systems, optimize the school office system and improve school management and decision-making level.A workflow management system must include modeling tool, enactment service, management tool and user interface, among which workflow model is the basement. A certain workflow model requires certain kind of workflow system. It certainty ensures consistency of the system between the various components, also decides a workflow system from design to the many links different workflow models also form a different workflow system.This thesis first summarized the generation and development of the work flow's technology. Introduce the basic concept of workflow and reference model that the workflow union proposed. Research and analysis about focusing on Reference Model which the workflow management Union proposed. Then analyzes the research through the existing workflow modeling tools, take into account strict semantic language and graphics features. And make the technology as a Petri system modeling tools.This thesis analysed basic concept, modeling standards and modeling method about Petri net workflow model, which conducted a detailed analysis and discussion about the various components of the workflow model. First, according to the office demand of Zibo Vocational Institute, put forward the workflow process modeling based on the Petri net as well as the office automation system model about our institute. Then researches our business process and gives the nine workflow modules of the school's office automation system. and established the workflow model that based on the Perti net that gave the workflow model based on Petri nets and ZBVC-Flow. In the system, this thesis focused on achieving a simple process modeling tools and a lightweight workflow engine, which is based on large-scale database Oracle; and reflected sharing resources, teamwork and office automation.This system used three-tier structure platform technology, selected more mature Web technologies and made a design through the Internet, The system is of the following features: Lightweight portable, clear framework, integral and comprehensive function, simple and mature model, flexible and convenient.