On 1/10/06, surabhi.ahuja <surabhi.ahuja@xxxxxxxxxxx> wrote: > > > is there an advantage of using a trigger? when the same job can be performed > by a stored procedure? > a trigger is actually a stored procedure... the advantage is that it's called automagically when an event happens... > one more question is as follows: > suppose i have a table x, with a primary attribute 'a' > > and i have a table y, with the primary attribute 'b', and a foreign key 'a'. > > suppose i say delete from x where a = '1', > > it means that not only the rows from x get deleted but also rows from y get > deleted. > only if you specified ON DELETE CASCADE at FOREIGN KEY creation > now i have a trigger which is written for deletes taking place from the > table y. > > however if i say delete from x where a = '1', > > will the trigger (mentioned above) still be called? (because delete are also > taking place from the table y) > if the DELETE will CASCADE, yes > thanks, > regards > Surabhi -- regards, Jaime Casanova (DBA: DataBase Aniquilator ;)
