| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in the case of protecting the secrecy in a assembly unit of an organization as branch to branch in the actual society organization, wherein in the method in which an identifier has position information of a tree structure organization as attribute information, when a change in tree structure such as addition, deletion and migration of the identifier is caused, it is necessary to adjust the attribute information of an identifier causing a change or all identifiers in some case, resulting in taking much time and trouble for management. SOLUTION: The assembly of organizations having the same uppermost organization in an organization hierarchy is divided as units. It is determined whether the unit to which a user belongs is the same as the unit to which another user belongs or not by obtaining the uppermost organization from the attribute information of the user and the attribute information of the organization, and the reference user and the user to be referred are compared in their uppermost organizations to thereby determine whether reference is right or wrong. |
