建立檢視
create view IS_Student(sno,sname,grade)
as
select student.sno,sname,grade
from student,sc
where student.sno = sc.sno
and sdept = `IS`
and cno = `2`
with check option刪除檢視
drop view IS_student
檢視之間的相互索引
create view IS_s1(sname,grade)
as
select sno,grade
from IS_student
where grade > 90