After update complete set

Hello list,

Is there a way in pg to fire a function when a complete (not row by row)
set is updated/inserted/deleted, for instance.

update order_detail set confirmed='S' where modifieddate=current_date;

Then after all the affected rows are updated, I need some code to
uptaded other tables from the information of the updated rows in the
details table.

Thanks in advance.

--
Sinceramente,
Josué Maldonado.

"Cuando los ricos se hacen la guerra, son los pobres los que mueren."
Jean Paul Sartre. Filósofo y escritor francés.