There are alternatives to setting the trigger inactive and active:

Alternative 1)

Create a special user or role for the update process and exit the trigger if it is the update user/role

Alternative 2)

CREATE GENERATOR TRIGGERS_ACTIVE;

To set triggers active

GEN_ID(TRIGGERS_ACTIVE, -TRIGGERS_ACTIVE +1);

To set triggers inactive

GEN_ID(TRIGGERS_ACTIVE, -TRIGGERS_ACTIVE);

Add this line to the start of all of your triggers:

IF (GEN_ID(TRIGGERS_INACTIVE, 0) = 0) THEN EXIT;

There are no such alternatives for indexes.

I do not understand your description of your problem, are you trying to say that you do not have complete control of the update and that normal users will be working at the database at the same time as you fill the tables?

There is no Spanish IBO list, but there is a Portuguese Firebird list, look at: http://firebase.com.br/mailman/listinfo/lista_firebase.com.br

Hope this helps,

Set