WASFM: A Web Application System Functional Model

Abstract

Web application system is a kind of system organization form which is of large scale and complex. Accurate requirements modeling of this kind of system has very important effect on system success. A web functional modeling method is raised in this paper called WASFM. The paper presents the formal description of WASFM and proves the efficiency of this model through a web system modeling example. Keywords-web application functional model; formal language; function type I INTRODUCTION The web application system (WAS) is a kind of network software which does not need to install client program and can be accessed by browser, so WAS is also called B/S system. WAS is an advanced system architecture owning some obvious advantages like the economic efficiency in system development and the flexibility in system extension. That's why it has become the trend of e-commerce, e- government and other life services. The most famous web systems include 'Baidu', 'Google', 'taobao', 'facebook' and so on. Web application systems are always complicated with a large number of functions, so system requirement analysis is the emphasis and the difficulty in system construction. Clear and detailed definitions of system requirements are very important for system design, development and testing work. Functional model needs to define the system function type, page layout, field definitions, handle constraint and business logic, etc. This paper is focused on the research of WAS functional modeling methods and proposed a formal model named WASFM.