>>What would be the simplest way to ensure that all the tables are backed-up on a regular basis? Not really so much how you would do it - we would use DynaZip or something like that - but more where/when should it be done? If we wanted it to happen at least once a day, and there could be multiple workstations accessing the data on a server (of which we have no admin control). When to do it? On shutdown of the app? On startup? Do you do it at the very end of your Main.prg that is starting the app in the first place? What is the best way?
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>Maybe at a different application which should be run from Windows Scheduler when everybody is supposed to be out (3AM or something)

That is a good idea.