Dear Mark,
 
Thanks a lot for your quick answer. I suspected this, specially because the column rdb$system_flag is different of 0 (zero). But as I don't know deeply the bd structure (the system tables), I asked this for to know if this case could mean useless triggers, and then this could mean trash for the db. I understood your information very clearly and I thank you a lot for that.
 
My best wishes for you,
Roberto Camargo.


________________________________
From: Mark Rotteveel <mark@...>
To: firebird-support@yahoogroups.com
Sent: Saturday, June 15, 2013 10:27 AM
Subject: Re: [firebird-support] about system table RDB$TRIGGERS

On 15-6-2013 15:20, Tupy... nambá wrote:
> Dear friends,
>
> Opening the table RDB$TRIGGERS, I saw many rows where the column RDB$TRIGGER_SOURCE is empty (null or an empty string). And the related tables doesn´t present these triggers.
>
> I ask you:
> -Are these rows at RDB$TRIGGERS useless ?
> -May I delete these rows ?
> -If I delete these rows, may I cause some any kind of trouble to my database ? Will this delection be helpful for the DB ? This way, will this delection affect the DB operation in any way, positive or negatively ?

Never, ever directly manipulate the system tables. Most of those
triggers are system triggers which are important for the correct working
of the Firebird database. A new Firebird database has 35 system triggers
which have no source (because they weren't declared using SQL).

The RDB$TRIGGER_SOURCE is just informational, the actual (compiled)
trigger is stored in RDB$TRIGGER_BLR.

So no, don't delete them, you will ruin your database.

Mark
--
Mark Rotteveel


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