| 摘要 |
<p>[PROBLEMS] Centralized management of shared information shared within a group and message information communicated among the members are performed. [MEANS FOR SOLVING PROBLEMS] A server (1) stores shared data (1c) such that shared information is divided into arbitrary blocks of divided shared information and identification information for identifying each block of the divided shared information is added to each block of the divided shared information, and the blocks of the divided shared information and the identification information are registered and massage data (1e) such that identification information on one or more items of shared data (1c) associated with each set of message information and identification information on the addresses of the message information and the senders are added to the message data (1e), and the message data (1e) and the identification information are registered. From a member terminal (2), the shared data (1c) and/or the message data (1e) with addition of identification information on the member is retrieved, read, or referenced.</p> |
