Research On Scene Visualization Description Based On Meta - Model

As the key part of scenario, scenario describes the details of scene and elicit requirements information, which affects the work of the late stage in requirements phase.It has been widely used in the practice of requirements engineering and the effect is significant. Despite their important role in requirements, scenario description suffer from several major drawbacks, which lade to many problems in requirements elicitation 、requirements description and requirements communication.To remedy these drawbacks,this paper presents a scenario visual description method which based meta-model. Firstly, in this paper we analysis several viewpoints scenario meta-models in detail, point out their defects and redefine the elements definition and rebuild the relationship between elements. Then a unified meta model which apply to the multiple view is established. Secondly, by the multi-perspective meta-model, this paper explicit and organize the symbol definition to an activity with the visual view in order to realize the visual description of the scenario. Finally, prototype version of the scenario editing tool are now up and according to a practice case-the Automatic Teller Machine system, this paper compared the two different description way of withdraw scene to demonstrate the effectiveness and superiority of the scenario visual description.