ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS’’, Bangkok, May 23-25, 2001 
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2.7 Spatial Data Release 
Web-GIS, to be brief, is a new technology to extend and perfect 
GIS by using INTERNET. Infinitely variable map scale oriented 
spatial data release should consider the diversity of different 
users’ hardware platforms and software platforms. INTERNET 
can eliminate these differences. Web-based spatial data release 
platform will become the standard platform of spatial data 
release. 
3. CONCLUSION 
This paper researches in approaches and technologies of 
information generalization of infinitely variable map scale. 
Because information generalization of infinitely variable map 
scale includes broad technologies and applications, we cannot 
resolve all problems through one or several math models, there 
are still long times to realize information generalization of 
infinitely variable map scale. 
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3. Wang Nengbin, The Principles of Database,Pulbishing House 
of Electronics Industry,2000 
4. Cheng jicheng et al,The Introduction of Digital Earth,Pulbshing 
House of Science,2000