SQL数据库原理与设计-实验七“查询语句”数据
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70B0A14155718F1746C9E61DECDDFCCA9FE601F7FF5D30B6389406271 102E38ED
--drop database school
create database school --创建数据库
go
/*CREATE DATABASE school
ON
( NAME = school_dat,
FILENAME = 'd:\school1.mdf',
SIZE = 2,
MAXSIZE = 4,
FILEGROWTH = 1 )
LOG ON
( NAME =school_log,
FILENAME = 'd:\school1.ldf',
SIZE = 2MB,
MAXSIZE = 3MB,
FILEGROWTH = 1MB ) */
go
use school
go
EXEC sp_addtype ud_sno,'char(6)'
go
--创建表
create table Student (
Sno ud_sno ,
Sname char(10) not null unique ,
Ssex char(2) check (ssex='男' or ssex='女') ,
Sage smallint check(sage>16) ,
Sdept char(10) not null default 'JSJ' ,
primary key (sno)
)
create index ix_student_sname ON student(sname)
create table course(
Cno char(4) ,
Cname char(16) ,
Cpno char(4) ,
Ccredit int check (Ccredit >=0 and Ccredit<=5),
check( cno<>cpno) , --约束
primary key (cno)
)
create index ix_course_cpno ON course(cpno)
create table SC(
Sno ud_sno ,
Cno char(4) ,
Grade int check(grade<=100) ,
constraint pk_sc primary key (sno,cno),
foreign key (sno) references student(sno) ,
foreign key (cno) references course(cno) ,
)
create index ix_sc_cno ON sc(cno)
--添加数据
insert into Student (Sno,Sname,Ssex,Sage,Sdept) values ('0003','陈小明','男',20,'SX')
insert into Student (Sno,Sname,Ssex,Sage,Sdept) values ('0004','杨秀红','女',21,'JSJ')