First was flat files, then came RDBMS, then object DB’s. Now, XML gets slammed together with it’s last unconquered tier, the database.
Xpriori has made available, for free, a development version of them XMS product.
I would really like to see something like this take off, but with the speed I have seen from XPath over small, by DB standards, data sets, I can’t see replacing a relational DB with an XML one.
Who knows though, it may be useful & cool for something.