I see...thank you for the clarification...one more question...
How does PG protects itself from a run-away code (eg an endless loop) ? In other words, does PG run the "untrusted" code in a seperate process?
Thanks
Medi
On 8/29/07, Tom Lane <tgl@sss.pgh.pa.us> wrote: "Medi Montaseri" <montaseri@gmail.com> writes:
> I was under the impression that recent modern databases, like PG, allow you
> to transfer control to an out-of-system (system being the DB engine) module
> (shared lib, dll). That is while triggers transfer control within the
> system, now mechanisms exists that allow you to go outside of the system. In
> that context, whence the control is transferred to a C, Perl or whatever
> language, who is to stop that function from doing anything it wants.
Well, sure. Postgres calls those untrusted languages, and only lets
database superusers use them.
regards, tom lane