>...   my question is if a database is a more
> adequate to store the geographic data than an xml.

"It depends"
Both would hold trivial amounts of data, but a database might be
overkill for a dozen points.
Both would hold thousands of points.
Finding a selection from amongst a thousand is probably going to be
easier from a proper database - but if choices are going to be limited
you could pre-order an XML file.
Managing who writes what to your XML file would involve quite a bit of
coding ; this is provided for you in a database system.
Associating data with a particular user (author?) who is already in a
database is a no-brainer really ...
Editing or removing entries in a database is easier than in a flat
file - but who cares if it isn't going to change.
etc etc

cheers, Ross K

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