Patent ID: 8364704

Claim:
A method for transmitting messages over a communication network to update a large quantity of network user terminal databases, the messages being transmitted unidirectionally from a managing center to a plurality of distributed user databases, each distributed user database being stored in a user terminal, said method comprising the steps of: providing identical messages without any database addressing to be unidirectionally transmitted from the managing center, wherein each identical message includes conditional controls that include queries for searching useful data present in distributed user databases; transmitting said messages from the managing center over a unidirectional connection to a plurality of distributed user databases; allowing individual user terminals to execute said queries and to search the useful data present in each distributed user database for predetermined data; and conditionally updating each distributed user terminal database separately according to the results of said searching of the useful data present in each distributed user database and without a return message from the databases to the managing center regarding the performing of the conditional updating.