Abstract: A handheld device includes a host database having first and second API associated therewith, a client database and a notification handler. The notification handler sends a request for notification of a change in the host database to the first API and receives the notification of the change in the host database after the change has occurred in the host database. The notification handler then requests contents of the host database from the second API and requests contents from the client database. These contents are then compared by the notification handler to identify the change in the host database. The notification handler then sends a command to update the client database based upon the change in the host database such that changes made in the host database of the handheld device may be continuously synchronized with the user's desktop computer via a wireless communication network.