"Lenorovitz, Joel" <Joel(dot)Lenorovitz(at)usap(dot)gov> writes:
> I want to have a trigger that will copy some data from a table in one
> schema to an analogous table in another schema every time a record is
> modified UNLESS the modification is the result of a cascaded foreign key
> constraint.
Sorry, there isn't any reasonable way for a trigger to tell that.
regards, tom lane