.uml / Rup In The Project Of Re-engineering Systems And Applications

With the fast development of information technology, software crisis become even more serious. For the purpose of mitigating the crisis. researched on how to maintenance the existing system more effectively is badly needed. Software reengineering is being attached much more importance in recent years, for it's dramatic enhancing performance and maintainability of the existing system by re-abstract design model and incorporating new technologies to the existing system.This paper discusses software reengineering, further researches related techniques and methods.The paper presents two key technologies, UML and RUP. The software reengineering model which the paper discusses is based on this to technologies.Based on researching the traditional software reengineering model, consult the cores of UML and RUP, design the iterative and increasing software reengineering model based on the UML and RUP, and define the phases and important actions. The reengineering model has important meaning to sufficiently understand the informationof the old system and apply the information to new system. The paper expatiates each important actions of the iterative and increasing software reengineering model,describes each detail and the whole process about the model how to analyze the old system and establish the new system.The paper combines the iterative and increasing model ofreengineering to the practice, outlines the general reengineering scheme,using the project of overseas sales order system of Haier group corporation as the application object.