While technically the DNN sql provider model was originally designed as a way for more than one sql server to be utilized - its not really the case these days.  The DNN core is very closely tied to MS SQL - and since DNN itself needs to be run on a MS Server and MS SQL Express is free there is not really any great reason for wanting to head down the mysql path.

So the simple answer is no - the more complex answers is - it could be made to if someone wanted to go to the effort of porting the dnn core sql provider scripts to mysql compatibility.  But having said this - there would be little chance of many modules working and no forward support for new versions without redo that process.

Westa

I'll see a nice development for MySQL

http://dnnmysql.codeplex.com/

It's still made for DNN 6 but maybe the community will pick it up and fix it for 7 as well.
@JT_Gregory. The stability of MySQL (now a day in MariaDB) and the speed do attempt to keep track for MySQL development. True, Microsoft did a very good job with MSSQL. But as a opensourcer , i'll like it when a good working opensource software can beat the prof.