On 1 Aug 2013 13:47, "Lester Caine" <les...@lsces.co.uk> wrote: > > > > I'd second that ... > Managing metadata should ALWAYS be detached from anything to do with data. In > fact the only metadata changes to our historic data over the years has been the > addition of a few extra fields. > > And Aldo's comment about 'UNIQUE' constraint also applies. > > > -- > Lester Caine - G8HFL > -----------------------------
I agree that we should not having metadata changes at runtime, but in my design i plan to automatically generate a historical table based on setting, so the server application is responsible to synchronize the table definition. This is only planned, i haven't implement it yet. I choose this in order to simplify the application development and make it more robust [Non-text portions of this message have been removed]
