use TEST
go
if exists(select * from sysobjects where name='Student')
drop table Student
go
create table Student (
StudentID int primary key,
Name nvarchar(50) )
go
if exists(select *from sysobjects where name='BorrowRecord')
drop table BorrowRecord
go
create table BorrowRecord
( BorrowRecord int identity(1,1),
StudentID int, BorrowDate datetime,
ReturnDate datetime )
go
if exists(select *from sysobjects where name='truStudent')
drop trigger truStudent
go
create trigger truStudent
on Student
for update
as
if update(StudentID)
begin update BorrowRecord set StudentID=i.StudentID
from BorrowRecord br, deleted d,inserted i where br.StudentID=d.StudentID
end
if exists(select *from sysobjects where name='strStudent')
drop trigger strStudent
go
create trigger strStudent
on Student
for Delete
as
delete BorrowRecord from BorrowRecord br,deleted d where br.StudentID=d.StudentID
GO
delete from Student where StudentID=1005