Обсуждение: [trigger] is it possible to launch a shell script?

Hello all,

I have to synchronize the content of 2 databases, each one being used by an
application from our Information System ; unfortunately these apps require a
specific DBMS : one needs MySQL and the other Postgresql.
Now I want the mysql database to be updated with the data from Postgresql
when this one is updated itself.

I heard about triggers, but I did not find any way to activate something
else than an SQL procedure with Postgresql ; with Oracle I know that I can
launch nearly whatever I want (including standalone sowtware) and I can
easily write a shell script which would call the mysql & insert the data,
BUT is it possible at all?

Thank you in advance for your answers, remarks and suggestions.

Faithfully yours,
Grégory Luguet

--- Gr�gory_Luguet <gregory.luguet@evidian.com> wrote:
> I heard about triggers, but I did not find any way
> to activate something
> else than an SQL procedure with Postgresql ; with
> Oracle I know that I can
> launch nearly whatever I want (including standalone
> sowtware) and I can
> easily write a shell script which would call the
> mysql & insert the data,
> BUT is it possible at all?

 I've read that you can write your trigger procedures
in C. Maybe you can use C system call to call a shell
script. I haven't tried programming stored procedures
in C.

  The following is the section of the manual regarding
triggers

http://www.ca.postgresql.org/users-lounge/docs/7.2/postgres/triggers.html

Hope that helps,
ludwig.



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