This is actually the first time I came across http://www.xtranormal.com/watch/6995033/ http://www.xtranormal.com/watch/6995033/ I have always seen the relation

This is actually the first time I came across http://www.xtranormal.com/watch/6995033/ http://www.xtranormal.com/watch/6995033/ I have always seen the relational-databases-VS-nosql-databases as a false dichotomy. I think these systems serve different purposes. I use MySQL+memcache for a site now, but I'd have no hesitation to use CouchDB for another site if that's more suited for it. I'd even use them both if that's beneficial for the webapp.