Web Sevice In The Management Information System Upgrade

With the development of the information in society, the companies who are the important roles in society need to develop their information system. One of the requirement is shared their information with their suppliers, thus the efficiency of purchase material and the efficiency of deliver production will be improved. But how can the requirement to be come true? Some information system used in the company is too old. In the time, there was no broadband, and nobody would forecast the broadband will be developed and be used in so many areas,otherwise the archives of the information system is can not be found now. A method is use new information system, but the method is too risky, the company will expend much money, use many employees, and perhaps it will be lost. The other way is using Web Service.Web Service is suitable for different platforms, architecture development system integration. Because Web Service Architecture is the Loosely Coupled, you can use any language, on any platform in preparation Web service. Eventually a call through Web API and the API is called browser. Through the Internet ,We call the Web Service, and Web Service order the database server, inquiry data, input data, modify data, delete data . So Web Service is the best solution.So many tools can be used to Web Service development. One of them is Vs.net. Vs.net is the software of Microsoft Co.,Ltd. which is the famous software company.This thesis described the case: The information system is too old to be achieved , how the information is shared with suppliers and managers. But now we use vs.net tools develop the Web Service, which can provide the suppliers get their orders through the Internet, and also can provide the suppliers import the schedule when they will deliver materials through the Internet, so the manager of company can use these information., so that this information system is upgrade. This paper is comprehensive of the the project demand by users, systems analysis, system design, code realized, system testing five parts,which illustrate how the upgrade to be achieve.