Performing a timed synchronization method, apparatus and system for

Performing a timed synchronization method, apparatus and system, wherein the method comprises: acquiring the synchronization data set management object DSMO synchronization information; DSMO perform synchronization information corresponding to the synchronization task. As a result of the server sync with the terminal, access terminal DSMO, and specific synchronization task terminal DSMO defined query and management, so that the server may know the data terminal and the server synchronization operation, the server and modifications can be made to develop a data synchronization; Further, the server may complete the definition of synchronization tasks, reducing the requirements on terminal capabilities.