The Study And Application Of Distributed Material Current Management System Based On Triple-tier Structure

Material Current Management is the core of data management in every material circulation department. BY combining with planning, purchase, selling, and shifting, inventory management organically, it has marked and positive effect on decreasing cost, reducing backlog, speeding up the turn of funds, guaranty production. It presently has become the most important one in the heavily part of the enterprise management and AMT. Following with the development of network economy, enterprise management has taken place many changes and the MIS should be changed with it. The architecture for the development is the foundation on which the material current management system can be running successfully because of the numerous circulation departments, scattered operation and inventory sites, and complicated structures of network system.Recently, following with the development of network technology, the distributed application based on Internet/Intranet and triple/Multi-tier system has become an important area for the network information processing and provides optional technology and method for us. Its core is to deal with the application in the way of delaminating. It backups more of user, more stronger data engine, more cheaper maintenance cost especially for Internet/Intranet mechanism which make network management for material current and e-commerce be possible.Based on these, the content of this thesis is to study how to utilize the development method of multi-tier application and advanced management in MRP II/ERP for material management system. The purpose is to make full use of the performance of computer and network, organize the scattered point and settle down the key problem of enterprise. Chief work and achievements of the thesis are as follows:1. Based on the discussion of relative technology for developing distributed application, the implementation model, disposal mechanism and fault-tolerant rule are offered, which provided theoretical basis for developing distributed material current management system.2. By analyzing the enterprise's real status and demand, the network top structure and soft system structure are set up for implementation. Also, the design target and develop flow of the entire application are provided for next process.3. Based on analysis of the enterprise in detailed, data model, function model and database is offered for implementation, in which encode the information resources by the method of tier-cluster and surface-cluster and provided data basis for the implementation of application.4. By applying the method of developing distributed application to the every flow of material management, which is based on the rule of function division, especially designing the core of application-application server in detailed and getting further optimization to the performance such as security and efficiency, the final target is to realize distributed management for material current resources.5. Based testing from multi-sides, the application system can run correctly on the network and an example and the analysis of benefit is offered.