SQL创建数据库、建表、填入内容

--创建数据库
create database Information

go

--使用数据库
use Information

go

--创建表
create table Student
(
 Sno nvarchar(50) primary key not null,
 Sname nvarchar(50) not null,
 Ssex bit not null,
 Sbirthday datetime,
 Class nvarchar(50),
)

create table Course
(
    Cno nvarchar(50) primary key not null,
    Cname nvarchar(50) not null,
    Tno nvarchar(50) not null,
)

create table Score
(
    Sno nvarchar(50) not null,
    Cno nvarchar(50) not null,
    Degree decimal(4,1),
)

create table Teacher
(
    Tno nvarchar(50) primary key not null,
    Tname nvarchar(50) not null,
    Tsex bit not null,
    Tbirthday datetime,
    Prof nvarchar(50),
    Depart nvarchar(50) not null,
)

--填入数据  Student
insert into Student values('','曾华','','1977-09-01','')
insert into Student values('','匡明','','1975-10-02','')
insert into Student values('','王丽','','1976-01-23','')
insert into Student values('','李军','','1976-02-20','')
insert into Student values('','王芳','','1975-02-10','')
insert into Student values('','陆君','','1974-06-03','')

--填入数据  Course
insert into Course values('3-105','计算机导论','')
insert into Course values('3-245','操作系统','')
insert into Course values('6-166','数字电路','')
insert into Course values('9-888','高等数学','')

--填入数据  Score
insert into Score values('','3-245','')
insert into Score values('','3-245','')
insert into Score values('','3-245','')
insert into Score values('','3-105','')
insert into Score values('','3-105','')
insert into Score values('','3-105','')
insert into Score values('','3-105','')
insert into Score values('','3-105','')
insert into Score values('','3-105','')
insert into Score values('','6-166','')
insert into Score values('','6-166','')
insert into Score values('','6-166','')

--填入数据 Teacher
insert into Teacher values('','李诚','','1958-12-02','副教授','计算机系')
insert into Teacher values('','张旭','','1969-03-12','讲师','电子工程系')
insert into Teacher values('','王萍','','1972-05-05','助教','计算机系')
insert into Teacher values('','刘冰','','1977-08-14','助教','电子工程系')

--主外键关系
--如表A中的Ids是主键，要约束表B中的Aid列，那么语句应该是：
--alter table B add constraint A_B_Ids foreign key(Aid)  references A(Ids) 

--Student 中的Sno    约束      Score  中的  Sno
alter table Score add constraint Student_Score_Sno foreign key(Sno) references Student(Sno)

--Course 中的 Cno     约束     Score  中的  Cno
alter table Score add constraint Course_Score_Cno foreign key(Cno) references Course(Cno)

--Teacher 中的 Tno     约束     Course  中的   Tno
alter table Course add constraint Teacher_Course_Tno foreign key(Tno) references Teacher(Tno)

创建好数据库，建表，填入内容后准备开始练习