📄 数据库.txt
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create table book(
bno char(13) primary key,
category varchar(50),
title varchar(50),
author varchar(50),
press varchar(20),
total int,
stocked int,
year int,
price numeric(6,2));
create table card(
cno char(10) primary key,
name varchar(50),
unit varchar(100),
cat char(7));
create table admin(
id char(10) primary key,
name varchar(50),
address varchar(255));
create table borrow(
cno char(10) not null,
bno char(13) not null,
borrow_date date,
return_date date,
id char(10) not null,
primary key(cno,bno),
foreign key (cno) references card(cno),
foreign key(bno) references book(bno),
foreign key(id) references admin(id));
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