Web-based Distributed Database System Research And Design

Nowadays social have already entered an information ages, people saved more and more information in the calculation in the network on board. How to save, manage, share and withdraw information? The problem has caused people's concern. Concentrated database systems have already can't satisfy people's need. In this time Distributed database systems go into the ages' stage.With the database technique and the network technique develop quickly, distributed database system not only has a very mature development, but also gets a wide application. Distributed database system matches the request of the information management system application, the business enterprise management thought and management method. Therefore distributed database system has already become the important link in the information processing.Distributed database system means a whole data. The whole data was dispersed in the different place but logical is a whole data. And it has share, autonomy, controlling redundancy and dispersing the business processing etc. characteristics. Distributed database system is not simply combined with concentrated database system and network technique. It is very difficultly carried. At present there has not a real distributed database system which is used in the company. But faced the need that the business company requests the shared data, the browser/server mode is used widely.The thesis mainly introduced the relevant concepts and theories of distributed database system. Made a deep research to the principle and designing and carrying of distributed database system. Analyse the database distribution and the database allotment. What's more the thesis also introduced the technique of .NET. Analyse the total frame of .NET and the advantages of using the .NET.The thesis takes the development of the electronic commerce as background. 《china yike》 commerce system is a example. Apply the example design a distributed database system. 《china yike》 commerce system has a strong business information database and the quantity very and considerable buyer and the selling party customer's community. In the meantime, with one anti- and other business electronics network and extensive drown the bad appearance of the expensive business enterprise, the platform take various business service function as predominant new electronic commerce terrace. Detailed analys the 《china yike》 commerce system and put a concrete designing project in the analysis of the process. And according to the design principle of distributed database system, the thesis illuminates the main data form in the system..