The Bank's Loan Accounting System Based On EJB Frame

The Bank's Loan Accounting S(?)tem is the subsystem of the Integrated Service Network System,used for dealing with the business of all kinds of bank's loans.This system is a distributed Object-Oriented system that is developed completely with the Object-Oriented development method,using UML as the modeling language to carry on system analysis and system design,and developed on the basis of EJB technique.On account of the phrase of developing,this system can be divided into four phrases:system analysis,system design,system application and system implementation.The task of system analysis is mainly the modeling of function,static structure and dynamic behavior of the real world system in the eyes of business personnel,according to the true roles in the real world.The task of system design is to adjust,expand,and optimize the analysis model in the eyes of designer, considering the specific implementation technique and performance requirement and adopting various kinds of design patterns.The task of system implementation is to use the specific techniques to code the system,to test the system and to deploy the system.System implement is system application in projection and corporation after system complement,validates mainly system function,find function faulty in implement process.It is contributed to evening maintain and more development.The system is testified its implementary capability after bank system application.On account of the architecture,this system can be divided into four layers:the client layer, the Web layer,the EJB layer and the database layer of this system is an Oracle relation database system.The emphasis of the development task is laid on the Web layer and the EJB layer.The Web layer is responsible for the presentation logic of the system,used for offering input and output Web page to the client side.The EJB layer is responsible for the business logic of the system,encapsulating the business object,the business rule and business workflow into EJB components.We know there are a lot of works to be done in the course of the software development. Except the system analysis,the system design,system application and the system implementation that are discussed in this dissertation,there are also many works such as project management, quality assurance etc,which also have essential influence on the success or failure of a software project.But because of the limitation of space,this dissertation has not discussed these topics.