| 摘要 |
PROBLEM TO BE SOLVED: To obtain a system for propagating a program or data through a network without reducing or consuming server's resources by providing the system with 1st and 2nd information revision circuits and a status reporting circuit. SOLUTION: The revision of at least a part of information stored in a server 110 is propagated through the communication network 100 based upon its level. Each of 2nd level nodes 120a to 120c collects and transmits the current status of one or more 2nd level information. A server 110 is a 1st level node, receives the current status of 2nd level information and determines whether revision of one or more 2nd level node information is necessary or not by using the current status of the 2nd level information as a function. When the revision is necessary, the server 110 transmits the 2nd level node information to one or more 2nd level nodes 120a to 120c.
|
