May i know how to get the data that I entered in Service Desk?

for example i requested for a new user access for the AD and I create a VBScript to get the data from the SQL and create a new AD user.

but when I want to QUERY the data from the SQL i can't find the Table for the Custom Fields that I created in SD.

Where can i find the data that i entered in SD Custom Fields?

Thank  you!

Paul Martin