[support] webform data

Hi Guys, I have a webform and I trying to figure out in the mysql database where is that data kept. I can find the nid and I can query the node table and see the record for the webform but I do not know where/how to get the data that belongs to my webform. I search but I did not get anything. Can some provide a link that explains where do I get the webform data? Thanks,