    :
CREATE TRIGGER emp_insert INSTEAD OF INSERT ON emp_view BEGIN
DELETE FROM emp
WHERE empno = :new.empno; END;
      emp .  ,    ,     (subversion).   ,  ,       ,  
INSERT INTO emp_view (empno, ename, deptno) VALUES (1111, 'SMITH', 40);
,    (  )          emp.         ,          .
 INSTEAD OF    .     ,        ,    .      ,              ,     ,    :     ,   emp_view,     emp_view       ! ,        empno (,   ,    ),  ,       ,  . ,   -  ,       "".
 INSTEAD OF    .      , ..    ""    ,       .        INSTEAD OF,              .   ,     . ?              ,         ,     ,     .
    ,   INSTEAD OF    .      "Oracle:   ",     ,     
30	Oracle 8