Andi Gutmans wrote:
Btw, I already mentioned this to Arnold but another options is DB2
Express-C (http://www-306.ibm.com/software/data/db2/express/) which has
XML support and is free (with few enough limitations to make it suitable
for a large variety of apps). ext/db2 supports it.
There are some good links here: http://tinyurl.com/35643d
For people who have to deal with large sets of XML (coming in through
web services or other sources) looking at XML DBs like SleepyCat, DB2
and others is probably a good idea. They don't/shouldn't replace RDBMS
but be complementary.
There is currently a discussion about the differences on the GenXML list on
Yahoo. One of the largest databases of genealogical data did propose an XML
schema to replace their current text based standard, but it seems to have
withered on the vine :( The main problem and one also affecting openstreetmap
now is that XML 'databases' simply do not scale well, so at some point you
have to convert back to RDBMS when they get too big.
XML is fine for data transfer, but most big operations who piled into 'XML
conversion' are now finding the problems and back peddling ;)
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