What I mean is that, I have to identical program, identical database too. But "A" is being use by one user and "B" by another user.

Both the computer is not link together. I want to do in such a way that at the end of the day. I can bring the database of "B" to "A" without overwritting the database in "A", instead just carry on from "A" 's last record.

Hope you know what I mean. Thank you.