With the right OS permissions, you can open the file and read/write to it with any program you want.
Of course the format is pretty complex, but if you're smart enough it can be done.
Actually, IBM i does have a similar interface that I'm pretty sure doesn't go through the DB. Service
tools includes a hex editor that allows you to edit most (all?) objects on the system directly. And
before Dave jumps in, this isn't the same as the hole describe above since the service tools have
their own set of user IDs and authorities. A standard OS user with authority to the file would not be
able to use service tools.
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