I'm looking for a good solution to what seems to be a simple problem.
I need to disable a user group from writing to any number of tables on a schedule - let say Saturday between 0600 and 1200. I'd like not to have to write special time handling for all the client applications. It would be enough to display a custom error message from the database, something like "Write disable between 0600 and 1200", but this need to be generated at the DB side.
Is this at all possible ?