The Research On Component Technology Using In Web-based Information System

This paper studies component technology and using it in Web-based Information System, and discusses WEB service and its important influence on Web-based Information System. By which we probe into the mechanism which uses component technology and WEB service to built Web-based Information System and the resolve method about correlative questionComponent technology (COM) makes developers to develop Web-based Information System easier using Microsoft Windows Network Applications architecture (DNA). Using Component technology, developers can create all kinds ofcomponents that are written in any language and that can interact over network. UsingComponent technology allows software product lines to be developed in significantly less time.In .NET Framework, Component technology remains and will continue to be an important part of the overall programming model, and it can be fully leveraged from ASP.NET and the overall .NET Framework. We can continue to create components using Microsoft "Visual Studio .NET and other compilers and then call them from ASP.NET pages. In .NET Framework, develop components is easier and need less time.A Web Service is programmable application logic accessible using standard Internet protocols. Web Services combine the best aspects of component-based development and the Web. Like components, Web Services represent black-box functionality that can be reused without worrying about how the service is implemented. Web Services can divide the business logic into components. Then, the components can active all over the Internet. So, it will be the trend in the fields of Distributed Applications. Everyone can invite the components through the Web Services.We have used the technologies, which we discussed in the paper; first the component we developed can operate the database system as a unit, second, the WEBservice we developed can work through the Internet. We achieve a simple network Information System based component technology and WEB service, which use .NET system structure. At the same time we explore a way to combine the Information System and the component and the WEB service as a whole system, which make the study we do more important.The paper makes elaborate discussion about design objective, design idea, system description, concrete design and implementation process about application system, and gives detailed description of the corresponding technology.