The Development Process Based On MDA

This paper is about the research of information system development. The research is divided into two parts, one part is the understanding of information system development process, and the other is the practice of system development process based on the MDA. They are combined and inseparable.This paper analyzes the process of system development. It begins from the analysis of the structured process, realizing the complexity of system analysis and implementation. Then it compares each model, analyses the redundancy of structural method and weak purpose of prototyping method, and learns something from the division about two risk of spiral model, realizing system development efficiency and quality relate to the understanding of structure and function.This article regard the entire development life cycle of system as transformation of demand to computer system through the process of change to structure and function. In order to achieve this process, the demand will be divided into record type needs, management requirements, control type needs and auxiliary type needs according to the reliance of demand and structure and function. Based on the division, this paper designs the process of system development, and knows about the transformation of business process from the standpoint of conversion from auxiliary needs to restraining needs.The development process described in this paper is the process of development tool based on MDA. After understanding of development process, this paper expounds MDA thoughts gradually from the history of application program technique development. It obtains basis of MDA thoughts according to the division of logical data flow diagrams and physical data flow diagrams in data flow diagrams.This paper expounds the MDA thought which is the process of business expression into application through mapping and separation of business expression and bottom realization. This paper introduces the PanSchema modeling thoughts based on MDA and the development process of PanSchema originally support, and then explains the relationship of five models PanSchema can establish and four demands they will achieve.This paper introduces the development of certain material management system using PanSchema development platform based on MDA according to the classification of demand and development process. In the part of development, it's divided into several stages and detail work in each stage is introduced under the direction of process and PanSchema. These work covers the designed process, and plays a role of validation for demand division and process design.Based on the description above, this paper summarizes four methods about demand division. Based on the classification of system development process combining into PanSchema for system development is effective. It eliminates confusion of development process, and makes development process more orderly.