All the below mentioned tables are Virtual tables and doesnt exist physically. You have to write a SDK code to achieve this.
Use this utility from BOB downloads.
The below link would be useful for you to get more knowledge about Query Builder.
http://blogs.hexaware.com/business-objects-boogle/business-objects-query-builder/
http://blogs.hexaware.com/business-objects-boogle/business-objects-query-builder-part-ii/
Regards,
Mani
Manikandan Elumalai 
(BOB member since 2009-10-23)