What rollback in a data warehouse really means
Rollback in a data warehouse means putting a table back to the state it had at a moment you choose. Everything that arrived after that moment is removed, the values that applied then become the current values again, and the point where the next load starts moves back with them. In Yres you do this per table, from the admin screen, with one date and time. This article follows a single example to show what happens, and where it goes wrong when you try it by hand.