基于关系结构的轻量级工作流引擎

针对关键业务应用的开发离不开工作流技术的支持，通过对关键业务的实际开发需求的分析，在传统的关系数据库基础上，提出了一个适用于关键业务开发的基于关系结构的轻量级工作流引擎的框架结构。此工作流模型由机构模型、信息模型和控制模型3部分组成。深入讨论了采用关系结构和轻量级理念来设计工作流引擎的原因，并详细地给出了相关的机构模型、信息模型和控制模型的设计原理以及具体的表示和实现方法。其原型已经应用到实际的应用系统中。实践证明，利用此工作流引擎可以显著地缩短关键业务的开发周期。

RELATION BASED LIGHTWEIGHT WORKFLOW ENGINE

Workflow technology plays an important role in the development of critical business applications. According to the analysis of the requirements to develop critical business applications, a framework of a relationship based lightweight workflow engine is presented, which is built over the conventional relational database system. It consists of three components, namely: organization model, information model and control model. The reasons that the concepts of relationship and lightweight are adopted to design the workflow engine are thoroughly discussed. The principle to design, the representation of and the way to implement the organization, information and control model of the workflow engine are described respectively. A prototype of this workflow engine has been applied to a project about the automation of trademark registration and administration, which shows the application of the workflow engine can markedly shorten the cycle of the development critical business applications.