A distributed type of database system according to the present invention comprises a communication line for transmitting, when a transaction is generated in any of a plurality of DB sites, a request message for requesting permission of updating from the DB site to a broadcasting station site. After receiving...http://www.google.de/patents/US6286004?utm_source=gb-gplus-sharePatent US6286004 - Distributed type of database system, consistency managing method for the same, and a computer-readable recording medium with a program for making a computer execute each step of the method stored therein
