Abstract: A data-synchronization computer program allows many personal portable workstations to wirelessly communicate with a server and to provide updates to an applications database. Each personal portable workstation maintains its own copy of the database with opportunistic updates that occur as the network amongst them allows. Data synchronization object data structures are generated as new data is entered at each personal portable workstation, and these are placed in synch queues for transmission when possible. Each personal portable workstation can continue to operate with its own instance of the applications database and does not depend on instant or continuous network access.