| With the rapid development of information science and technology, the enterprise informatization has increasingly influenced on all walks of life, promoted their rapid innovation and development, and the most affected one is manufacturing-oriented. Northern Heavy Industries Group Co. Ltd belongs to the manufacturing industry, this thesis focus on its purchase information management system based on.NET.The introduction of purchase information management system achieves the online purchase, reduces the labor intensity of work-related buyers and purchase management personnel and improves efficiency, strengthens the monitoring mechanism. The system includes the following eight parts:system management, purchase plan management, purchase contract management, provider management and inventory management etc. The system architecture adopts the three-layer B/S structure, which reduces the coupling coefficient and the complexity of the system. The system is developed on the platform of Microsoft Visual Studio.NET2003, the framework of.NET Framework1.1. The back-end database of the system adopts the relational database SQL Server2000, which is very flexible and steady. And the system employs the object-oriented development language, VB.NET.Firstly, this thesis describes the development of the domestic status of enterprise informatization, the system development background, purpose, significance and technologies of the system. Then, based on the system needs, the design and implementation of the system is introduced as the most important part. The design section, based on the company specific needs, shows the whole design blueprint of the system and gives details about design of system function and database. The implementation section fully introduces implementation method of each module. Finally, through the full range of testing the system, the thesis presents the deficiencies existed in the system and the final results of the systematic and objective assessment. |
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