Study And Development Of Access Control Management In PDM Based On Middle And Small Enterprises

According to the requirement of middle and small enterprises to the product data management ,based on the extensive reference to the existed commercial PDM system and the embedded investigation to the middle and small enterprises ,taking Microcomputer and Windows server as the application platform , Microsoft SQL Server 2000 as the system data base ,Microsoft Visual C++ as the developing tool, the access right control management of a PDM system was developed based on the Client/Server structure , and the model faces on manufacturing information integration and also backs up the oriented engineering.Firstly, the paper elaborated the basic conception of product data management .according to the analysis and research of the background and developing history of PDM ,The thesis summarized the exploring actuality of the topic in the world , then ,the paper introduced the system structure and main function of the PDM system . According to the investigation and research on the spot in Hanyang Arsenal, The paper analyzed and summarized the characteristic of middle and small enterprises , then ,it proved the requirement of middle and small enterprises to PDM system , based on which the thesis took forward the purpose and basic content.The thesis also introduced three models of PDM access right control, such as authorizing flow system , work flow system and the model based on user-association-actor .By value of the analysis and researching of the three models , the thesis summarized their shortcomings, and took forward the characteristics of models for the middle and small enterprises. The paper also introduced the related theories and supporting techniques of product data management , including PDM system structure and constitution ,means of PDM system thoughts based on objects, technologies of database and constitution of objects model and client/server .because thoughts that based on objects has vital effects in PDM system , the thesis elaborated it at large. Then based on which, it took forward the system structure of PDM and established the access right control model structure .The paper emphasized the access right control management ,and analyzed it at large. According to the analysis and research , the author created the access right control model. In the last chapter, the thesis also analyzed and introduced the design of database for the access right control management. Base on thoughts of model, thethesis also analyzed the related interface of function model, and finally succeeded in developing a good soft system .