The Research And Implementation Of Decision Analysis System Based On J2EE And XML

People in everyday life and in the process of learning often encounter some decision-making problems, such as: buying houses and cars, choose the occupation that is fit for himself, among the decision analysis methods, analytic hierarchy process (AHP) can provide a new, simple and practical modeling method for decision-making.With the pace of information construction of enterprise continues to accelerate, making a variety of relational database systems have heterogeneous issues. among them, the particularly conspicuous problem is that each system can not be interconnected between them, the information can not be shared, form the "information islands". there are many redundant datas and garbage datas in the system that are caused by "information islands". and can not guarantee the consistency in datas, making the utilization of information greatly reduced. thus, companies often need to convert the heterogeneous relational databases to integrate the datas in the heterogeneous databases, to achieve the data sharing, and improve the degree of information. this text is aimed at the status in the heterogeneous databases of enterprises, the integrated program of heterogeneous database are overly planned. by designing the functionality and interface of the modules, in the actual development, the MVC architecture is used in the design, allowing developers to concentrate on achieving business logic of the system in the component without having to consider many technical details of the problem brought about by distributive that has nothing to do with the business of the system. be helpful to teamwork and reduce the development time of software, by designing the login module of the user, discussed the advantages of the MVC framework in the project development and the specific implementation steps. in the discussion of the integrated scheme in the heterogeneous database, based on the features and advantages of XML technology and proposed that integrating with the system datas by the use of XML technology enables the data exchange in inter-enterprise has become more transparent, efficient. on the concrete implementation, by the use of XML describes the characteristics of data structures through the hierarchical method, and the SQLToXML library is as a support tool provided by the middleware development tools WSAD, realizing the datas in the database to map to XML file, shielding the differences between the various heterogeneous databases, in the last, by use of XMLToSQL library, complete the integration from the various heterogeneous databases to the back-end database of the integrated information platform. enabling the data exchange between the enterprises has become transparent and efficient.