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Product Data Management PDM ( Product the Data Management ) technology , software technology foundation , is a management of all product - related information ( including electronic documents, digital documents , database records , etc. ) and all product - related process ( including approval / issuance , engineering changes, the general process , configuration management ) technology , and provides product lifecycle management , enterprise-wide collaborative environment for product design and manufacturing to establish a parallel . In short , PDM is a tool to manage product data and the product development process to help managers and enterprise PDM ultimate goal is the reach of enterprise-class information integration . PDM system 's main function modules include : electronic storage and document management , workflow management , system management . Electronic warehouse and document management is a core function of the PDM system , file upload , store and download method of control as well as data backup and recovery to become one of the important key technical points , affecting system availability , consistency , data security , and network overall performance. Web File Explorer - based technology development , and for the specific needs of large-scale manufacturing enterprises on the PDM system depth research , to address the stability of the document management services in highly concurrent environments , security , and reliability problems . Through the file system management principle , the realization of the principle of existing file upload component and the HTTP protocol , FTP protocol communication mechanisms and data transmission principle in-depth study and research , combined with NET platform as well as the latest Web development technologies , key research and solve the problem of file transfer , storage structure of the file system , as well as file dump program PDM system , and design appropriate solutions . On this basis , this paper uses a layered architecture design ideas , PDM file management prototype system analysis and design . NET-based Web application development technology . Finally the analysis and evaluation of the solutions proposed in this paper , and given further work content .
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