Michael Widenius is the main author of the original version of the open-source MySQL database and a founding member of the MySQL AB company.
In 1985, Michael founded TCX DataKonsult, a Swedish data warehousing company, with Allan Larsson. In 1995 he began writing the first version of the MySQL database with David Axmark, released in 1996. He is the co-author of the MySQL Reference Manual, published by O'Reilly in June 2002; and in 2003 he was awarded the Finnish Software Entrepreneur of The Year prize.
During the 2007 MySQL Users Conference & Expo, Michael Widenius was awarded the honor of being the world's first MySQL Fellow â€” the highest honor one can achieve from MySQL AB.
Michael left Sun in February of 2009 to start his own company.