Google Base Data
API is another way for programmers who want to write client applications that
interact with Google Base. With the query like this:
http://base.google.com/base/feeds/snippets?bq=query&key=xxxxxxx
The value of “bq”
is the input query and the value of “key” is a unique ID provided by Google after
registered in Google. The result is returned in clean XML format. However,
there are still some limits, with the same query, Google Base Data API returns
different results compared to its original web interface.
