The Design And Implementation Of Online Old Item Exchange System

With the continuous improvement of people’s consumption level,many kinds of idle items are increasing,resulting in lots of resources wasting.But at the same time,people pay more attentions to circular economy and sustainable development.Thus,how to reuse the idle items and play their maximum values has become a realistic problem to be solved urgently.In order to reduce the waste of goods and meet the swap demand,more and more websites about goods exchange arise now.However,the current C2 C exchange websites have some insufficient,such as without comprehensive functions and strong controllability,and so on.Therefore,this paper intends to develop and implement an online old item exchange system.In the first,through full investigation and analysis on the existing swap systems,the paper summarizes the insufficient of the existing systems.Secondly,the functional requirements of the system,the business processes and the boundaries of the system are analyzed in detail.Thirdly,it does user role analysis and user case analysis using the business process diagrams,use case diagram,sequence diagram,activity tools and methods,and establishes the system auxiliary model.Fourthly,it does function modeling and database modeling,including conceptual design(ER model)and logic design(relation tables).The system is divided into seven modules,including membership management,item information management,business management,dispute management,distribution management,advertising management and system management.Finally,it discusses the implement technonologies and gives the system interfaces.This paper studies and designs a system with humanization,complete function,simple operation and scientific data storage.It solves some issues of no channels,information occlusion and communication barriers intraditional systems,and improves swap efficiency,to make the swap work more networked,informational and functional.