Starting to Learn Geospatial Data

Here is my first search:

http://www.google.com/search?hl=en&client=firefox-a&channel=s&rls=org.mozilla:en-US:official&hs=koY&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=geospatial+data&spell=1

This came many links. Here are a few of them:

http://www.rainingdata.com/products/TigerLogic/Geospatial/index.html?_kk=geospatial%20data&_kt=e27ea97c-c173-4311-a19a-97935c87ef11&gclid=CMiX8-7b4pICFRc0kgodt3IF5g

This talks about XML data management server

Geography Markup Language (GML)

Geospatial XQuery (GSX)

OK