PDM中文档并发访问控制模型研究

iming at solving the data conflict of PDM initiated by the limiting of the mutual exchange of product data in product concurrent design, the document concurrency access control model oriented to product design is put forward. First, the document management model oriented to product design is built by using object-oriented technology; Second, the concurrency access control mechanism of document is built through analyzing the root cause of document information conflict in the process of product design, including access control lock management and monitoring of conflict management. On this basis, the document concurrency access control model is constructed. Finally, through the application of the system, the proposed model is validated.