【作者】 郭晓坤；

【导师】 邹劲；

【作者基本信息】 哈尔滨工程大学 ， 船舶与海洋结构物设计制造， 2004， 硕士

【摘要】 论文主要是针对产品数据管理的安全性，采用建模理论，对现有的产品数据管理系统安全性方面的理论与方法进行研究，力求探索出一种更加有效的方法，以确保产品数据的完整性、一致性和保密性。 本文分析了目前产品数据管理安全性方面的措施与途径，参考国际国内成熟的产品数据管理系统的经验，并结合建模理论，提出了安全模型的基本框架。在此基础上，说明了PDM软件的安全子系统实现方法，其中包括访问权限控制管理、用户识别管理、用户认证管理、产品数据的备份与恢复、产品数据的输入与输出、系统日志管理等模块，同时考虑到安全方面的技术手段不断发展和升级的需要，系统采用了动态升级方法，以不断加强系统安全性。通过对产品数据管理安全性中典型的事例进行分析，将系统日志管理作为本系统的中心，以用户操作和数据流动为基本活动事件，对该模型提出了进一步的优化。 针对船舶行业产品数据的特点，特别是现代产品数据管理软件的特点，在实现本系统的过程中，进行了一些特殊的设计，以使其能更好的与现有PDM2001系统集成。 本文以安全模型为基础，建立了一个产品数据管理安全子系统，得出了本模型是解决PDM安全性方面问题的较好方法的结论。更多还原

【Abstract】 The contents of this paper mainly focus on the security of the product data management, and by utilizing the model theory, this paper has exhaustively analyzed the theory which is used by the current PDM system, striving to find out a more effective way, so as to ensure the integrity, uniformity and confidentiality of the product data.By referring to the experience of fully-developed products which were developed by international or national companies, and by combining the model theory, this paper has analyzed the measures and ways which have applied to current products, providing a fundamental structure of security model; basing on this foundation, this paper demonstrates the way of implementation of PDM security subsystem, including the model of access control, user identification management, user authentication management, data backup and recovery, the I/O of product data, system log management; Also considering that there is need to develop and upgrade the technical means of security, the subsystem adopts the thought of dynamic upgrading, so as to enhance the security of the system. In the process of analyzing the typical case of data management security, this paper also presents some new way to ameliorate the security model, i.e. taking user’s operation and data-stream as basic activity case.As the products of ship industry have their own feature-especially have the feature of modern PDM, this paper attempts to design it specifically, in the process of implementing this subsystem; so as to ensure that it be easier to integrate PDM2001 system.Basing on the security model, this paper has built up a subsystem of data management security, and presented a better conclusion of security subsystem onsecurity model.更多还原