Abstract: Techniques are disclosed for synchronizing service data between a data store and a device using the service data. These synchronization techniques may be used with a synchronization method and device that adaptively adjust synchronization parameters, such as the synchronization interval and quantity of synchronized data, on a per-end-user basis in response to actual end-user behavior. In particular, heavy users of service data are rewarded with improved synchronization parameters, such as a combination of shorter synchronization intervals and increased synchronization data quantities, which provides closer to “direct access” performance.

Abstract: A data retrieval system includes a gateway server and an access client. The gateway server is communicatively connected to the access client through a network. The gateway server provides a presentation service (PS) and a real-time service (RTS), which cooperate with the access client to retrieve data from a data store and then provide the retrieved data to a user's remote communication device. More particularly, when a user wishes to retrieve data from the data store or to send data to the data store, the user establishes a communication connection between his or her remote communication device and the gateway server, and then requests the desired data from the gateway server. In response, the gateway server sends a command to the access client, instructing it to retrieve the requested data. The access client retrieves the requested data from the data store, and returns the retrieved data to the gateway server.