DATA SYNCHRONIZATION METHOD, SYSTEM AND DEVICE

摘要

A data synchronization method, system and device are disclosed. The method includes: A. client-side transmits a validating message of the data characteristic information to server, the message carries one or more data characteristic information set for the data in the data-base; B. the server compares the one or more data characteristic information carried in the message with the data characteristic information set by the data of the own data-base, confirms the data needing the synchronization according to the comparing result, carries the information indicating the data in the validating response message and transmits it to the client-side; C. the client-side confirms the data to be synchronizing according to the information carried by the response message, and transmits the data to be synchronizing to the server, so that the server could perform the data synchronization in the own data base. The method, system and device of the present invention could reduce the data traffic and increase the efficiency of the data synchronization.