05270701 is referenced by 32 patents and cites 7 patents.

A service processing system has a plurality of service processing nodes each having a single local data base, and a plurality of exchanges each of which is coupled user terminals. Said service processing nodes are coupled with one another through communication lines. A query by a user terminal is transferred to a local data base through an exchange to which the user terminal belongs. When a response to the query is stored in that data base, said response is directly given to the exchange from said local data base. On the other hand, when the local data base does not store the response the query of the user terminal is transferred to another service processing node which is designated by the local data base through the communication line between the service processing nodes. The response obtained in said other service processing node returns to the first local service processing node. Thus, the service to a user terminal is carried out by using a plurality of distributed data bases, each of which stores only local data.

Title
Service processing system with distributed data bases
Application Number
320129
Publication Number
5270701
Application Date
August 15, 1991
Publication Date
December 14, 1993
Inventor
Yoshikazu Ikeda
Tokyo
JP
Masanobu Fujioka
Saitama
JP
Nobuo Furuya
Tokyo
JP
Hikaru Yagi
Tokyo
JP
Atsushi Ito
Tokyo
JP
Agent
Armstrong Westerman Hattori McLeland & Naughton
Assignee
Kokusai Denshin Denwa
JP
IPC
H01H 67/00
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