What is MySQL?

[viperman224]

What Is MySQL? A friend told me it was free as long as i didn't sell it. is this true? if so where can I get it and what does it do exactly? thanks

[Ragnarok]

http://www.mysql.com/

Its an open source database, it is free to use as long as you don't sell it on. (so if you sell it as part of a web package you have to pay)