Mobile Database System Architecture
Mobile databases typically involve three parties:
1) Fixed Hosts: Fixed hosts perform the transaction and data management functions with the help of database servers.
2) Mobile Units: Mobile units are portable computers that move around a geographical region that includes the cellular network (or "cells") that these units use to communicate to base stations.
3) Base Stations: Base stations are two-way radios, installations in fixed locations, which pass communications with the mobile units to and from the fixed hosts. They are typically low-power devices such as mobile phones, portable phones, or wireless routers.
When a mobile unit leaves a cell serviced by a particular base station that station transparently transfers the responsibility for the mobile unit's transaction and data support to whichever base station covers the mobile unit's new location.
