In the relational or logical model?
My problem is that when engineering from the logical to relational model, it creates duplicates over and over again. So, if the tables in both the logical and relational models have twelve attributes/columns, and one in the logical model has a "preferred abbreviation" called "active_flag", and its relational equivalent (which was created by engineering in the first place) has a column called "active_flag", after engineering the relational table will have thirteen columns, a new one at the end called "active_flag_2". If I engineer again, I get an "active_flag_3". My model has about 100 tables now, and I've turned off engineering on a third of them because of all the duplicates I get that I have to keep deleting. (Curiously, "active_flag" is a common one to get duplicated.) (220.127.116.117)