ORACLEÊý¾Ý¿âµÄ»ù±¾Óï·¨¼¯½õ

ORACLEÊý¾Ý¿âµÄ»ù±¾Óï·¨¼¯½õ
 
-- ±í
create table test (names varchar2(12),
                   dates date,
                   num   int,
                   dou   double);
-- ÊÓͼ
create or replace view vi_test as
select * from test;
-- ͬÒå´Ê
create or replace synonym aa
for dbusrcard001.aa;
-- ´æ´¢¹ý³Ì
create or replace produce dd(v_id in employee.empoy_id%type)
as
begin
  
end
dd;
-- º¯Êý
create or replace function ee(v_id in employee%rowtype) return varchar(15)
is
var_test varchar2(15);
begin
  return var_test;
exception when others then
  
end
-- ÈýÖÖ´¥·¢Æ÷µÄ¶¨Òå
create or replace trigger ff
alter delete
on test
for each row
declare
begin
   delete from test;
   if sql%rowcount < 0 or sql%rowcount is null then
      rais_replaction_err(-20004,"´íÎó")
   end if
end
create or replace trigger gg
alter insert
on test
for each row
declare
begin
   if :old.names = :new.names then
      raise_replaction_err(-2003,"±àÂëÖظ´");
   end if
end
create or replace trigger hh
for update
on test
for each row
declare
begin
  if updating then
     if :old.names <> :new.names then
 reaise_replaction_err(-2002,"¹Ø¼ü×Ö²»ÄÜÐÞ¸Ä")
     end if
  end if
end
-- ¶¨ÒåÓαê
declare
   cursor aa is
      select names,num from test;
begin
   for bb in aa
   loop
        if bb.names = "ORACLE" then
       
  &