A new GIS system was developed to enhance the capabilities of existing conventional databases. To
this end, a dedicated PC server was installed with large storage capacity and computing power to run the
commercial ArcGIS Server (ESRI, Thailand Co. Ltd.) software. Local and remote users are connected to
this server via an upgraded network that enables the required fast transmission of typically large map files
onto individual (client) PCs. The client machines use ArcReader software that allows limited and
controlled access to the central database system, and the end-users can manipulate the available data to
obtain desired information.