I understand that Visokio works from 'flat' tables of data. I wondered if you could advise on the best way to set up Visokio tables in this case. I have a range of hierarchical market sectors, which are just fine. In the sector at the bottom of the tree, I have comapanies, and I want to be able to drill down through sectors to companies (and also back up or course). However many of these companies are actually in several (or all) of these bottom sectors. I would have set this up as two databases, linked via the company, but can't for Visokio. I could put comapnies as separate records for each, or as separate fields for each, but in both cases I end up with the company record in more than once. I really don't want to do this, as it will make the table far too large large and will also cause much double counting in other parts of the data. Any suggestions?Thanks