"Spatial Data Infrastructures-Technology Techniques for"
Spatial Data Infrastructures-Technology Techniques for implementing the SDI plan for Utopia. Group 1 28-9-2001 Overview •Introduction •Analysis of Computer Networks •Techniques for the implementation of the SDI plan for Utopia •Example of user requesting for data •Conclusions Introduction Case “SDI-enabling technologies, i.e. those technologies that facilitate storage, use and transfer of geo-spatial data.” How can we do that ? •Building an appropriate computer network will fulfill the above expectations Computer Networks •Transmission Media •Network Hardware •Network Software Transmission Media UTP Wired Coaxial Fibre optics Transmission Media Radiowaves Wireless Microwaves Infrared Network Hardware Broadcast Transmission Technology point-to-point LAN Network MAN Scale Hardware WAN Bus Topology Star Others Network Scale Local Server National Imagery DB WAN and Mapping Agency Local Server Ministry of Agriculture Local Server Global Server Global Metadata LAN Local Server Local Server Ministry of Client-Server University of Utopia Transportation Architecture Network topology-transmission-Software Local Server National Imagery Point-to-point and Mapping Agency transmission Local Server Ministry of Agriculture Local Server Global Server Global Metadata Bus broadcasting Star topology Local Server Local Server Ministry of TCP/IP University of Utopia Transportation Reference Model ? ? Query Send Data Homepage ClearingHouse Local Server Ministry of Quest Example:Web Server for Data Agriculture Local Server Request Send Local Server Data Ministry of Local Server National Imagery Local Server Transportation and Mapping Agency University of Utopia DB Conclusions •Building a computer network is a difficult work and needs to be done with attention, since a lot of parameters have to be taken into account •GIS as it is now 2nd generation will move very fast to Geo- Portal concept, access storage, etc through the Internet •We are trying to make data available to users but security mechanism must also be used to protect these data •Technology is advancing rapidly and our network should be built in such a way that it keeps up with these changes. •Make use of Internet as much as possible Questions ?