基于关系数据库的工作流服务器设计与实现

工作流服务器负责解释执行工作流定义。基于关系数据库构建工作流服务器,利用关系结构描述工作流数据模型,利用存储过程实现工作流业务逻辑,使工作流服务器和数据库服务器融为一体,不需开发专门的工作流定义语言和相应的语言解析器。和传统的工作流服务器相比,它是用位于服务器内部的存储过程处理工作流应用数据,而不是通过调用外部应用程序来处理,因此也简化了服务器接口实现。此工作流服务器由工作流引擎、消息管理子系统和目录服务子系统组成。

Design and Implementation of a Workflow Server Based on Relational Database

Workflow server is responsible for the interpretation and execution of workflow definition. Workflow server based on relational database describes workflow model by relational structure, implements workflow logic by stored procedures, so it is integrated with database server, and special workflow definition language and relevant parse do not need to be developed. Compared to traditional workflow server, workflow application data is processed by the stored procedures inside the server, not by the outside applications, so the implementation of the server's interface is also simplified. The workflow server is made up of workflow engine, message management subsystem and directory service subsystem.