this will be a bit difficult.
Basically, when you want to convert some thing that is in XML form to another type of storing format, you need a XML parser to do so. I do not know whether that mySQL come with the parser or not, but this is the concept of doing.
First, you can develop a XML parser yourself, like using php. Then you parse the XML file by each nodes, obtain in a string, integer, date or any format that u want.
Then with this data, you just do the nomal way that how you store data into mySQL.