基于Petri网的工作流建模技术及应用

工作流管理技术是 90年代初新兴起的软件技术。其实现的关键在于工作流概念模型的建立。虽然信息系统领域的建模理论已经发展得较为成熟 ,但在工作流管理领域还没有一个专门的建模工具来满足工作流建模的需求。通过对几种概念建模方法的比较分析 ,论文选择 Petri网作为工作流建模的主要工具 ,并探讨和总结了工作流程的路由结构、触发机制、可靠性工作流模型的分析方法 ,转换原则和组合性质 ,最后通过一个案例进一步阐述了基于 Petri网的工作流建模技术。实际应用表明该建模方法简单、可行 ,能够保证工作流模型的有效性 ,而且便于工作流网络的计算机形式化表示 ,有利于工作流管理系统 (WFMS)的实现。

Petri net based workflow modeling techniques and applications

Workflow management techniques were developed in the early 1990s, with conceptual modeling as a critical part. Modeling theory has been developed for information systems, but there are few special tools for workflow management that are applicable to conceptual modeling. This paper compares several conceptual modeling methods to develop Petri net based workflow modeling techniques which emphasis structure, triggering, transformation and combination of reliability workflow models. These techniques are illustrated with an example that the technique is practical and can be used to formalize a workflow model and to implement a workflow management system.