Web GIS is current GIS developing hotspot

the article beginning with analyzing the computing evolution process

points out that the Web distributed environment is the right way to make the traditional GIS industry reach the opening ideal

further step the paper summarizes the conception

characteristics

types and framework of Web GIS

try to bring forward the best plan to publish spatial data on network by analyzing and comparing the realizing methods(CGI

Plug-ins

Java)

including network protocol extend

new data model and its algorithm

complex data integration

and network optimizing method(distributed parallel computing)

at last realizes it by a Web GIS browser (Java applet) programming case.