>Have you never been in situations, when you want to modify structure of existing tables? Change the order of fields? Do you always change the structure programatically?

Nadya,

The order of the fields shouldn't ever come into play. So it shouldn't make a difference. I'm not terribly familar with SQL Server, but I think I've heard that you can't insert a column into a table without completely re-building the data structure from scratch in that environment.