The Design And Implementation Of Purchase Contract Managemcnt System Of Vanke Real Estate

Contract management is an indispensable part of enterprise management, and the perfect contract management is an important sign of the healthy operation of the enterprise. Due to the diversity of the form of contract and variability during performance, many companies rarely have a good approach to implement effectively and in time such management work:drafting, modify, statistics, monitoring and so on. A qualified contract management system should include the signing of the contract; data file management; management of contract payment processing, query and collection; management of contract receivables processing, query and aggregate; monitoring of the due money but unpaid. The system should also have system users with classification authority control to ensure the strict confidentiality of the enterprise contract data.In this paper, we adpot UML modeling language:use case diagram, class diagram, sequence diagram, activity diagram to describe the design and implementation process of Vanke Real Estate Procurement Contract Management System (VREPCMS). Firstly, show the system development background, then analyze the process of procurement contracts, analyze the use case of system functions on the basis of the system processes, use case diagram to describe the system functional requirements, divide the system function into four demand modules:contract signing, Contract filing, contract claims and contract payment, design the system architecture and program structure and use class diagram and sequence chart to describe the detailed design of system functions, provide system databases E_R graph and describe the database table structure, realize the interface of system function and describe partial function using activity diagram, show codes of partial system function, finally test the system as a whole and submit the contract management system.The system uses B/S structure mode, selects the integrated framework, Struts Spring Hibernate, based on J2EE multi-tier architecture for design and development. We achieve not only complete separation of the view, controller and model, but also a separation of business logic layer and persistence layer. For database server, we use SQLServer2008database manager for data storage. This system with such function modules:contract signing, contract filling, contract claims and contract payments realizes contract creating, contract execution, contract approval, query contracts, printing contracts and so on. It provides an electronic platform for Vanke Real Estate purchase contract management.