NOMADIC DATA COLLECTION AND MANAGEMENT METHOD INCLUDING PESSIMISTIC LOCKING OF DATA

A method of managing a central data repository including updating the central data repository from a disconnected nomadic device by receiving a request from a first nomadic device for access at the central data repository, authorizing the first nomadic device and sending a check out template to the first nomadic device. The server receives a checkout selection from the first nomadic device, authenticates the first nomadic device, and presents a list of authorized items to the first nomadic device; receives a request for selected items from the list and check out the selected items to the first nomadic device. This prohibits other nomadic devices from checking out the selected items checked out to the first selected nomadic device. The first nomadic device is disconnected and the checked out selected items are updated. After updating, a check in request is received at the central data repository from the first nomadic device for the updated checked out selected items The device is and authenticated and authorized, and the updated checked out selected items are returned to the central data repository.