I think it is not free, see here:
http://groups.google.com/groups?q=mysql+distribution+commercial&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=rp4d8.17%24FO6.1114%40nsw.nnrp.telstra.net&rnum=3"....
For normal internal use, MySQL costs nothing. You do not have to pay us if you do not want to.
...."
http://groups.google.com/groups?q=mysql+distribution+commercial&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=rp4d8.17%24FO6.1114%40nsw.nnrp.telstra.net&rnum=3"....
For normal internal use, MySQL costs nothing. You do not have to pay us if you do not want to.
...."
如果是你的单位内部自己使用
如果是用于教学\个人使用
如果不以商业目的(GPL)那MySQL就是免费的了
如果你用的是windows 下的mysql
除非你是教育目的,你必须购买许可证.
否则只会让你试用30天,
不知道是不是真的?
不过在MySQL程序里没有加任何限制
:》
呵呵,的确如此,一切放心就是了