Abstract: Embodiments of the present disclosure disclose a data synchronization method, system and apparatuses thereof. The data synchronization method includes the following processes: sending, by a client, a data characteristic verification message carrying one or multiple data characteristics for data in a client database, to a server; comparing, by the server, the one or multiple data characteristics carried in the data characteristic verification message with the data characteristics for the data in a server database; determining, by the server, the data to be synchronized based on a result of the comparing and sending the client a data characteristic verification response carrying information indicating the determined data to be synchronized. The method, system and apparatus thereof provided by the embodiments of the present disclosure can reduce the amount of data to be transmitted in data synchronization, and improve the efficiency of data synchronization.

Abstract: Embodiments of the present disclosure disclose a data synchronization method, system and apparatuses thereof. The data synchronization method includes the following processes: sending, by a client, a data characteristic verification message carrying one or multiple data characteristics for data in a client database, to a server; comparing, by the server, the one or multiple data characteristics carried in the data characteristic verification message with the data characteristics for the data in a server database; determining, by the server, the data to be synchronized based on a result of the comparing and sending the client a data characteristic verification response carrying information indicating the determined data to be synchronized. The method, system and apparatus thereof provided by the embodiments of the present disclosure can reduce the amount of data to be transmitted in data synchronization, and improve the efficiency of data synchronization.

Abstract: Embodiments of the present disclosure disclose a data synchronization method, system and apparatuses thereof. The data synchronization method includes the following processes: sending, by a client, a data characteristic verification message carrying one or multiple data characteristics for data in a client database, to a server; comparing, by the server, the one or multiple data characteristics carried in the data characteristic verification message with the data characteristics for the data in a server database; determining, by the server, the data to be synchronized based on a result of the comparing and sending the client a data characteristic verification response carrying information indicating the determined data to be synchronized; and determining, by the client, the data to be synchronized according to the information in the data characteristic verification response, and synchronizing the determined data to be synchronized with the server.

Abstract: Method for device capability negotiation, and method, system and device for synchronization. The synchronization system includes a synchronization server and a synchronization client. The synchronization server or the synchronization client is adapted to skip the device capability negotiation and directly perform a synchronization with the synchronization server and the synchronization client when the negotiated device capability or status ID, or the status ID indicating that the device capability has not been changed and has been stored. The method for device capability negotiation includes receiving an operation request carrying a parameter requesting a device capability negotiation; determining that the session is a device capability negotiation session according to the parameter requesting the device capability negotiation, carried by the request; returning a response and performing the device capability negotiation; storing results of the device capability negotiation.

Abstract: Embodiments of the present disclosure disclose a data synchronization method, system and apparatuses thereof. The data synchronization method includes the following processes: sending, by a client, a data characteristic verification message carrying one or multiple data characteristics for data in a client database, to a server; comparing, by the server, the one or multiple data characteristics carried in the data characteristic verification message with the data characteristics for the data in a server database; determining, by the server, the data to be synchronized based on a result of the comparing and sending the client a data characteristic verification response carrying information indicating the determined data to be synchronized; and determining, by the client, the data to be synchronized according to the information in the data characteristic verification response, and synchronizing the determined data to be synchronized with the server.

Abstract: The present invention discloses a method, a system, and an apparatus for processing emails through data synchronization. The email synchronization server receives an email or email status sent by the email server and synchronizes it to the email synchronization client; alternatively, the email synchronization server is adapted to receive an email from the email synchronization client and forward it to the email server for sending the email out, or receive an email status from the email synchronization client and forward it to the email server for updating. The email synchronization client is adapted to send an email or email status to the email synchronization server; or synchronously receive emails or email status from the email synchronization server, or obtain emails and email status from the email synchronization server after receiving an email notification.

Abstract: Method for device capability negotiation, and method, system and device for synchronization. The synchronization system includes a synchronization server and a synchronization client. The synchronization server or the synchronization client is adapted to skip the device capability negotiation and directly perform a synchronization with the synchronization server and the synchronization client when the negotiated device capability or status ID, or the status ID indicating that the device capability has not been changed and has been stored. The method for device capability negotiation includes receiving an operation request carrying a parameter requesting a device capability negotiation; determining that the session is a device capability negotiation session according to the parameter requesting the device capability negotiation, carried by the request; returning a response and performing the device capability negotiation; storing results of the device capability negotiation.

Abstract: A method for detecting and resolving the data synchronization conflict is disclosed by the present invention, and the method includes the following processes. The client and the server detect a conflict in data synchronization; acquire a conflict resolution result according to conflict detection data; and synchronize conflicted data according to the conflict resolution result. The present invention also provides a client, a server and a system for detecting and resolving the data synchronization conflict. In the solution of the present invention, the conflict detection for the data to be synchronized is performed before the data synchronization between the client and the server, so the data which can be transmitted and the data which can not be transmitted are determined, then the synchronization time is shortened, and the flow of network traffic is reduced.