Network system, gateway server, user identifier cooperation method and user identifier cooperation program

摘要

PROBLEM TO BE SOLVED: To provide a network system capable of identifying a single user from user management systems employing different methods.;SOLUTION: A network system includes first and second user management systems 20, 30 and a gateway server 10. The first user management system 20 manages ID information using a first ID association information table. The second user management system 30 manages first and second intermediary ID information using a second ID association information table. A gateway server 10 manages the ID information in association with the second intermediary ID information using a third ID association information table. When there is a login request via one of the user management system to the other user management system, the gateway server 10 retrieves second intermediary ID information or ID information corresponding to the submitted ID information or second intermediary ID information from the third ID association information table and outputs the retrieved information to the other user management system.;COPYRIGHT: (C)2013,JPO&INPIT