The Permission Management Of PDM Based On NoSQL Technology

The PDM system as the product data management software of large scale manufacturing,has a very important role in the production and management of enterprises. With the PDM system of continuous improvement and function becoming more powerful, users of the PDM system will continue to increase, resulting in many personnel permission types, staff roles varied; this causes a series of problems, such as the tight coupling problem of related tables stored in a relational database, and makes the access control and management more complex.The rights management based on relational database solves the system high concurrent read write and storage efficiency problems which caused by personnel flow, changing roles and permission changing very difficult. Instead of a relational database can effectively deal with the above problems. Therefore the research of the PDM privilege management system based on the NoSQL has important significance. Using the advantage of non-relational database easily processing unstructured and semi-structured data, make the NoSQL as the underlying database to build a flexible, efficient and scalable access management model to better achieve the rights management of PDM system.Firstly, the right management of the existing PDM system is analyzed in detail. The principle of access control is deeply studied. Sort out the PDM authority management system architecture, the authority management model work principle and the work flow. And analyze the existing problems in the existing RDB rights management model. Those lay the foundation for a new access control scheme.Secondly, the PDM system authority management model is designed. Abandon the traditional mode of associated multi-table relational database, design a permission set by using a NoSQL collection of nested forms. And then build a new model of rights management,to make up for deficiencies in the current PDM system permissions management.Finally, the authority management system based on NoSQL is completed, and the related functions of the PDM system are realized. And the validity and feasibility of the PDM system's privilege management model based on NoSQL is verified through experiments.