Michael Widenius is the main author of both MySQL and MariaDB.
The article has a fascinating quote about BSD and GPL licenses:
Widenius has said he regrets not taking steps to stop MySQL, his first love, from eventually being owned by a corporation – namely Oracle.
“That’s the one mistake I made,” Widenius told The Reg in an interview. “Based on the facts I had then, I’d say everything was done right. If I were able to look into the future, I'd have added one thing to the licence: that this licence is GPL but after three years it reverts to BSD, then Oracle wouldn’t have bought Sun because we’d be free within three years and MySQL would be BSD and nobody could take that away.”