Could anyone tell me:
From which databases/table can I extract info about the owner/user of data lab/data lab group instead of from viewpoint?
Why isn't from Viewpoint satisfactory? You may not know but with Data Lab 15.11, we added a new "Access Reports" option that will provide a layout of access for a Teradata user or role, as well as providing a blueprint of access within a Lab Group or multiple Lab Groups. Check out the Data Lab 15.11 release article for more information. This will be much easier than trying to do this directly against the Teradata DB system.