Oracle trigger, delete one piece of data and delete the associated data of another table at the same time.
Background: The common ID of
the main table TableA
and the associated table TableB : table_ID Create a trigger statement:
create or replace trigger Trigger_Name
after delete on TableA
for each row
begin
delete TableB where table_ID=:old.table_ID
end;
/
Query existing trigger statements:
desc user_triggers
select trigger_name,table_name,description from user_triggers;