摘要：RBAC(Role-Based Access Control) is an efficient and safe role_based access control mechanism. Separation Of Duty (SOD) is one of the most expected characteristics of RBAC system and also is one of the main characteristics of secure system. This paper presents SOD’s attributes of RBAC model by formal specification and their relations by state graph. This paper also explains a program for implementing SOD constraint in MIS by relationship between tables.
关键词：Role-Based Access Control(RBAC); formal specification; Separation Of Duty (SOD);Security; constraint
