>Wondered whether anyone had used DeKlarit for modelling the business domain? If so, your comments on this tool would be appreciated.

I won a copy of it at a user group meeting. I didn't like the fact that it automatically made changes to the table structures - some of which I did not want (names of foreign keys, for instance). Tech support was not very helpful in communicating how to turn that off, and in general, was not very helpful at all. The tutorials were overly simplistic and didn't really help much. Overall, I didn't see too much advantage to using it.