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and will be constructed on the back of XML. XML provide an 
effective way for open, vendor neutral data exchange, locally 
and especially over the Internet. The pieces for XML-based GIS 
have existed, especially for technologically open Web-GIS.GML 
provides an open data interface for data exchange between 
different GIS products from desktop to Internet. 
GML is new and exciting technology that will drive the future 
of spatial information on the Internet. With GML, spatial data 
(cords) encoded with XML, spatial objects encoded with unique 
Ids, attribute data (text) encoded in standard XML, Metadata 
can be integrated within the same files, spatial data can be 
distributed in the net via wired and wireless network. Spatial 
data will integrate within the semantic web totally. 
5. REFERENCES 
1. Adena Schutzberg, 2000, XML, GIS and You, 
http://www.giscafe.com/GISVision/Review/XML. htm I. 
2. OpenGIS Consortium. Geography Markup Language (GML) 
v1.0, 20-April-2000, edited by Ron Lake. Vancouver: Galdos 
Systems. http://www.opengis.net/gml/01-029/GML2.html. 
3. Robin Cover, 1998, The SGML/XML Web Page, Extensible 
Markup Language (XML), 
http://www.oasis-open.org/cover/-xm I.htm I 
4. The Web Mapping Testbed Tutorial, 
http://www.webmapping.org/vcgdocuments/vcgTutorial/. 
5. Ron Lake, Galdos Systems, Inc, (2001). Making Maps for the 
Web with Geography Markup Language (GML): 
http://208.56.114.185/company/galdos/articles/GMLMapMaki 
ng_gml.htm 
6. Ron Lake, Galdos Systems, Inc, (2000). Introduction to 
Geography Markup Language (GML). 
http://208.56.114.185/company/galdos/articles/introdu ction_t 
o_gml.htm