Or, we could do what we are already supposed to do, and check the data being entered before saving it.

You idea is a good one, but the example just struck me wrong. It is kind of like passing more gun control laws when we already have far too many in place. Passing a new law doesn't fix the root issue, nor does coming up with a work around for poor programming. The programmers who are too lazy to check the data they accept are the same ones who won't use your idea correctly either!

Not sure why, but I sure seem to be stuck in a root cause analysis rut at this point!