You can use the Exec plugin to pass certain fields of an entry to a MySQL database. Make yourself comfortable with basic MySQL syntax first here.
The correct command for Exec on Win7 is as follows:
exec: <%SystemRoot%>\system32\cmd.exe /c <\PATH\TO\>mysql.exe -u <user> -p<pwd> --execute="INSERT INTO <table> VALUES ('{{<entry1>}}','{{<entry2>}}')" <database>
other_fields option of the rss plugin.Please note the extended possibilities this basic tutorial in combination with other plugins.