| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for controlling a distributed database for always acquiring a valid search result by suppressing a traffic volume to be transmitted and received in the case of performing the access of the insertion processing or search processing of data. <P>SOLUTION: There is disclosed a relay node 2 for transferring a message received from a control node 1 to each storage node N by multi-cast. Each storage node preliminarily registers the multi-case group address of the self-node in the relay node 2, and the control node 1 identifies the multi-case group address of the storage node as the destination of the message, and transmits the message to the multi-cast group address destination, and the relay node 2 receives the message, and identifies a plurality of storage nodes associated with the multi-case group address, and transfers the message. <P>COPYRIGHT: (C)2012,JPO&INPIT |
