学生选课表建表

use 学生
go
create table Teacher
(
Tno char(3)primary key,
--教工编号
Tname char(4)not null,
--教工姓名
Tsex char(2)not null,
--教工性别
Tbirthday datetime,
--教工出生年月
Prof char(6) ,
--职称
Depart varchar(10)not null,
--教职工所在部门
)
go
insert into Teacher values('804','李诚','男','1958-12-02','副教授','计算机系')
insert into Teacher values('856','张旭','男','1969-03-12','讲师','电子工程系')
insert into Teacher values('825','王萍','女','1972-05-05','助教','计算机系')
insert into Teacher values('831','刘冰','女','1977-08-14','助教','电子工程系')

create table student
(
sno char(3)primary key,
--学号
sname char(8)not null,
--学生姓名
ssex char(2)not null,
--学生性别
sbirthday datetime ,
--学生出生年月
class char(5)
--学生所在班级
)

insert into Student values('108','曾华','男','1977-09-01','95033')
insert into Student values('105','匡明','男','1975-10-02','95031')
insert into Student values('107','王丽','女','1976-01-23','95033')
insert into Student values('101','李军','男','1976-02-20','95033')
insert into Student values('109','王芳','女','1975-02-10','95031')
insert into Student values('103','陆军','男','1974-06-03','95031')

create table Course
(
Cno char(5) primary key,
--课程号
Cname Varchar(10)not null,
--课程名称
Tno Char(3)references Teacher(tno) not null
--教工编号
)
go
insert into course values('3-105','计算机导论','825')
insert into course values('3-245','操作系统','804')
insert into course values('6-166','数字电路','856')
insert into course values('9-888','高等数学','831')
select *from Course

create table Score
--成绩表
(
Sno char(3)references student(sno)not null,
--学号
Cno char(5)references course(cno)not null,
--课程表
Degree Decimal(4,1)
--成绩
primary key(sno,cno)
)
go
insert into score values('103','3-245','86')
insert into score values('105','3-245','75')
insert into score values('109','3-245','68')
insert into score values('103','3-105','92')
insert into score values('105','3-105','88')
insert into score values('109','3-105','76')
insert into score values('101','3-105','64')
insert into score values('107','3-105','91')
insert into score values('108','3-105','78')
insert into score values('101','6-166','85')
insert into score values('107','6-166','79')
insert into score values('108','6-166','81')

select *from Score