MAINTENANCE OF WEB APPLICATION AND SUSTAINING WEB DATA CONSISTENCY

Abstract

The heterogeneous and dynamic nature of component making up a Web Application, the lack of effective programming mechanism and undisciplined development processes induced by the high pressure of a very shorty time-to-market, make Web Application maintenance a challenging problem. A relevant issue consist of reusing the methodology and exploring the opportunity of using Reverse Engineering and Reengineering to support effective Web Application Maintenance. The report presents the approaches of Reengineering in Web that explain how Reengineering process can lead to evolution activity in legacy system. We suggested V-model for Reengineering process that presents the technologies and approaches for building new Web services from existing Web Application. Based on the different parameter, we elucidate comparative study in between software reengineering versus Web reengineering and Reverse engineering versus Reengineering. Proposed STAR paradigm is used to define and implement a reengineering process that involves web applications and supporting tools. It offers a structured method for defining reengineering process and paradigm which provide systematic approach to reengineer any web application. Introduced Dynamic Data Extraction Algorithm for the maintenance of Web Application, which extract the content of Web page structure and remove the noise from the dynamic Web page. Furthermore we apply Cost Constructive Model in Web Application which help us to calculate the development time and maintenance cost. Comparison of the maintenance cost with and without noisy dynamic data has been done in all three modes of Cost Constructive Model.