Research And Application Of General Revenue System On The Three-tier Structure

With the popularity of the Internet and the rapid developing of the WEB technique, the software architecture has developed from two layers structure of C/S to three-tier structure. Compare with the traditional mode of the MIS, this structure has clearly advantage. It can adapt the development and management of the distributed application , so as to general utilize the information resource more effectively.First of all, the thesis discusses the limitation of the two-layer architecture for multi-databases and multi-users. Then it analyzes the theory of three-tier structure, and cognizant of the difference between the two structures clearly, and it also introduce the advantages for its agility . extensibility and security, so it comes out a measure to realize for hardware configuration. Further more, this thesis defines the key technology to apply the three-tier structure. As a result, it concrete requirement of the general revenue system to be a instance, and put forward a application solution for three-tier structure.This system adopts the Oracle databases as its DBMS, most business modules have been designed using Delphi technology, that is : the government tax information management, the enterprise financial affairs management, tax evaluation and the credit standing assessment subsystem. Some user mutual modules adopt the JSP technology to realize , such as the database query system , data collection, and data contrast system etc. At same time, applied the MVC(Model-View-ControlIer) mode in the B/S program, it makes the user-interfaces architecture have the favorable extensibility.