[Previously published here.]
(This started out as a polite response on a mailing list to someone saying “You guys are out of date, MySQL is a pretty decent db now”. But it got a bit ranty, so I thought I’d put it here instead. Enjoy!)
Current releases of MySQL certainly have many of the checklist features of a real DBMS. However, this does not constitute a defensible claim that MySQL is a real DBMS.