Based on the analgsis of some PDM software, it is pointed out that PDM is useful to manage CAD/CAM data but is weakly effective to provide a concurrent environment for CAPP system users.

• 摘要在分析产品数据管理(PDM)软件功能的基础上，指出PDM软件仅适用于CAD/CAM数据而不适合工艺设计的并行作业。