Abstract
The on-line purchasing book is one of important methods to carry on commercial activity using the modernization information network.User can land purchasing on-line system to buy books through browser,which entire process is convenient and quick.Comparing whih the traditonal bookstore,purchasing book through internet is one kind of brand-new marketing channels,whose market scale and management pattern breaks through geographical position,managemant area,business hour limitation.
Through diagnosising present situation about on-line bookstore,purchasing on-line system determines the system demand.On the basis of researching design priciple and crucial technology,purchasing on-line system utitlizes network,dadabase,ASP.NET and other related mainstream technology comprehensively,desigs system structure,various functions module and database structure,and realizes it specifically.
In the process of implementation carried on a series of attempt for promotion system performance and theusability. Include using Interface Oriented Design to reduce the coupling of each layer,using distributed database to solve DataBase Access Bottleneck Problem,using Abstract Factory Pattern to implement Multi.Database and using Strategy pattern to implement switch between direct and Message Queue when order insert.Then,the system using a lot of new technology to replace traditional technology.
Keywords: E-Business, Interface Oriented Design, Design Pattern, Distributed Database