Oracle中 delete、insert、update时触发器trigger的用法
insert:create or replace trigger TRI_ADD_EMP after insert on emp for each rowdeclare pragma autonomous_transaction;begin insert into emp_copy select :new.empno, :new.ename, :new.job, :new.mgr, :new.hiredate, :new.sal, :new.comm, :new.deptno
