i have added screen shots to help you. the only way you currently have to execute an sql is via phpmy admin but not in a folder. it is possible if
ssh is available.
access cpanel look for phpmyadmin as you can see in the screen shot. click the link name a new tab will open.
you will see phpmyadmin layout. click drop down box to find your database. then click the database
now you will a few tabs, click the import tab..
then you browse for the platinum.sql file and import it. but there is a max limit is 51200 kb
the other way by clicking the sql tab in the platinum database as seen in the last screen shot then opening platinum.sql via notepad then select all and paste in text area and clicking ok..
ps: you will not see operations and privileges tabs since the screen shots are from the local test server.