[Rails] "Database" as a collection of XML docs

[Marcus Andersson]

How about importing the documents into an XML database such as Exist 
(http://wiki.exist-db.org). It's a java server but it supports XML-RPC 
and REST to talk to it so it should be fairly easy doing it from Ruby 
especially since you only want to read (people have built connectors for 
PHP, Zope, Cold Fusion and Perl). Querying is done using xpath2 and 
xquery (with extensions) and it is pretty powerful.

/Marcus