drop table book_tab;
drop table book_type;
create table book_type(
bt_id varchar2(8) not null primary key, bt_name varchar(20));
commit;
create table book_tab(
b_id varchar2(8) not null primary key,
b_name varchar2(20),
book_price number,
book_num number,
book_type varchar2(20),
foreign key(book_type) references book_type(bt_id));
commit;
insert into book_type(bt_id,bt_name) values(‘a001′,’历史类’);
insert into book_type(bt_id,bt_name) values(‘a002′,’文学类’);
insert into book_type(bt_id,bt_name) values(‘a003′,’地理类’);
insert into book_type(bt_id,bt_name) values(‘a004′,’计算机類’);
insert into book_type(bt_id,bt_name) values(‘a005′,’ERP’);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-1′,’中國上下五千年’,34.45,45,’a001′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-2′,’兰亭集序’,34.45,45,’a001′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-3′,’世界地理旅游’,30,45,’a003′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-4′,’数据结构’,34.45,1,’a004′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-5′,’计算机组成原理’,34.45,20,’a004′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-6′,’计算机网络’,15,70,’a004′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-7′,’C语言’,34.45,7,’a004′);
insert into book_tab(b_id,b_name,book_price,book_num,book_type)values(’01-8′,’web前端’,10,70,’a004′);
commit;
select * from book_tab;
select *from book_type;
update book_tab set b_name=’C语言修改的版本’,book_price=100 where b_id=’01-7′;
commit;
select *from book_tab;
select * from book_tab where book_price>20;
select * from book_tab where book_price<30;
update book_tab set book_num=100 where book_type=’a001′;
select b_name,book_num from book_tab;
———————————————————–
create table sp_type(
id varchar2(20) not null primary key,
name varchar(30),
p_id varchar(20));
create table user_tab(
id varchar2(20) not null primary key,
name varchar(30),
pwd varchar(20),
type varchar(20),
creat_time varchar(20));
create table sp_tab(
id varchar2(20) not null primary key,
name varchar(30),
model varchar(20),
sp_text varchar(20),
spcie varchar(20),
c_number varchar(20),
sp_type_id varchar(20),
foreign key(sp_type_id) references sp_type(id));
create table order_tab(
id varchar2(20) not null primary key,
creat_time varchar(30),
type varchar(20),
user_id varchar(20),
foreign key(user_id) references user_tab(id));
create table order_detail_tab(
id varchar2(20) not null primary key,
count varchar(20),
order_id varchar(20),
foreign key(order_id) references order_tab(id),
sp_id varchar(20),
foreign key(sp_id) references sp_tab(id));
commit;
select * from sp_type;
select * from order_detail_tab;
—————————————————————-
—————————————————————
————————————————————-
drop table grade_tab;
drop table student_tab;
drop table course_tab;
drop table grade_tab;
drop table teacher_tab;
create table teacher_tab(
id varchar(20) not null primary key,
name varchar(20),
age number(3),
Edu varchar2(20),
Tage varchar2(20)
);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-001′,’赵雅芝’,’57’,’本科’,’二十年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-002′,’刘若英’,’37’,’本科’,’十年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-003′,’谭晶’,’27’,’研究生’,’五年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-004′,’郎波’,’44’,’本科’,’十六年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-005′,’储久量’,’50’,’本科’,’二十年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-006′,’海尔’,’37’,’本科’,’十年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-007′,’谭晶’,’27’,’研究生’,’五年’);
insert into teacher_tab(id,name,age,Edu,Tage) values(‘T-008′,’湛强’,’44’,’本科’,’六年’);
commit;
select * from teacher_tab;
——————————————————————-
create table class_tab(
id varchar(20) not null primary key,
cname varchar(20),
pnum number(3),
T_id varchar(20),
foreign key(T_id) references teacher_tab(id)
);
insert into class_tab(id,cname,pnum,T_id) values(‘C-001′,’计算机科学与技术’,20,’T-001′);
insert into class_tab(id,cname,pnum,T_id) values(‘C-002′,’通信工程’,10,’T-003′);
insert into class_tab(id,cname,pnum,T_id) values(‘C-003′,’VR技术设计’,40,’T-007′);
insert into class_tab(id,cname,pnum,T_id) values(‘C-004′,’游戏媒体设计’,70,’T-006′);
insert into class_tab(id,cname,pnum,T_id) values(‘C-005′,’前端工程’,20,’T-005′);
insert into class_tab(id,cname,pnum,T_id) values(‘C-006′,’运维工程’,20,’T-008′);
commit;
select * from class_tab;
———————————————————————-
create table course_tab(
id varchar(20) not null primary key,
name varchar(20),
c_time varchar(20),
credit number(3,1),
T_id varchar(20),
foreign key(T_id) references teacher_tab(id)
);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Co-001′,’数据库’,’20’,9,’T-001′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0002′,’计算机组成原理’,’20’,7,’T-003′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0003′,’计算机网络’,’20’,5,’T-004′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0004′,’数据结构’,’20’,9.5,’T-005′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0005′,’操作系统’,’20’,6.5,’T-006′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0006′,’java编程语言’,’20’,8.5,’T-007′);
insert into course_tab(id,name, c_time,credit,T_id) values(‘Cou-0007′,’大数据’,’20’,10,’T-008′);
commit;
select * from course_tab;
———————————————————————
create table student_tab(
id varchar(20) not null primary key,
name varchar(20),
age number(3),
major varchar(20),
inTime date,
class_id varchar(20),
foreign key(class_id) references class_tab(id)
);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101001′,’刘可’,25,’通信工程’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-001′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101002′,’张可’,20,’计算机科学与技术’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-002′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101003′,’赵可’,23,’VR技术设计’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-003′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101004′,’田可’,21,’游戏媒体设计’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-004′);
insert into student_tab( id , name,age,major,inTime,class_id)values(‘20101005′,’郝可’,24,’前端工程’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-005′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101006′,’钱可’,27,’通信工程’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-006′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101007′,’穆可’,28,’游戏媒体设计’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-001′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101008′,’韩可’,20,’前端工程’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-003′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101009′,’王可’,29,’VR技术设计’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-004′);
insert into student_tab( id , name,age,major,inTime,class_id) values(‘20101010′,’段可’,22,’计算机科学与技术’,to_date(‘2010-09-14′,’yyyy-mm-dd’),’C-004′);
commit;
select * from student_tab;
————————————————————–
create table grade_tab(
id varchar(20) not null primary key,
grade number(3),
con_id varchar(20),
foreign key(con_id) references course_tab(id),
stu_id varchar(20),
foreign key(stu_id) references student_tab(id)
);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G01′,99,’Co-001′,’20101001’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G02′,99,’Cou-0002′,’20101002’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G03′,99,’Cou-0003′,’20101003’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G04′,99,’Cou-0004′,’20101004’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G05′,99,’Cou-0005′,’20101005’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G06′,99,’Cou-0006′,’20101006’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G07′,99,’Cou-0007′,’20101007’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G08′,99,’Cou-0003′,’20101008’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G09′,99,’Cou-0003′,’20101009’);
insert into grade_tab(id, grade, con_id,stu_id)values(‘G010′,99,’Cou-0003′,’20101010’);
commit;
select * from grade_tab;
