From 373fa80b799f778e9b6fa4e7118c2455984a23d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=A9=AC=E5=AE=8F=E8=BE=BE?= <2657224306@qq.com>
Date: Mon, 11 Sep 2023 20:58:06 +0800
Subject: [PATCH] =?UTF-8?q?=E2=80=9C=E4=B9=9D=E6=9C=88=E5=8D=81=E4=B8=80?=
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---
 .../9\346\234\21011\346\227\245.md"           | 113 ++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 "48 \351\251\254\345\256\217\350\276\276/9\346\234\21011\346\227\245.md"

diff --git "a/48 \351\251\254\345\256\217\350\276\276/9\346\234\21011\346\227\245.md" "b/48 \351\251\254\345\256\217\350\276\276/9\346\234\21011\346\227\245.md"
new file mode 100644
index 0000000..320d25b
--- /dev/null
+++ "b/48 \351\251\254\345\256\217\350\276\276/9\346\234\21011\346\227\245.md"	
@@ -0,0 +1,113 @@
+drop table if exists administrators;
+
+drop table if exists book;
+
+drop table if exists "books category";
+
+drop table if exists employee;
+
+drop table if exists faculties;
+
+drop table if exists student;
+
+drop table if exists 借书;
+
+/*==============================================================*/
+/* Table: administrators                                        */
+/*==============================================================*/
+create table administrators
+(
+   ad_id                int not null,
+   em_id                int not null,
+   ad_name              char(20) not null,
+   ad_number            char(20) not null,
+   primary key (ad_id)
+);
+
+/*==============================================================*/
+/* Table: book                                                  */
+/*==============================================================*/
+create table book
+(
+   bo_id                int not null,
+   ca_id                int not null,
+   bo_name              varchar(20) not null,
+   primary key (bo_id)
+);
+
+/*==============================================================*/
+/* Table: "books category"                                      */
+/*==============================================================*/
+create table "books category"
+(
+   ca_id                int not null,
+   ad_id                int not null,
+   ca_name              char(20) not null,
+   primary key (ca_id)
+);
+
+/*==============================================================*/
+/* Table: employee                                              */
+/*==============================================================*/
+create table employee
+(
+   em_id                int not null,
+   ad_id                int not null,
+   em_name              char(20) not null,
+   primary key (em_id)
+);
+
+/*==============================================================*/
+/* Table: faculties                                             */
+/*==============================================================*/
+create table faculties
+(
+   fa_id                int not null,
+   fa_name              varchar(20) not null,
+   fa_number            char(20) not null,
+   primary key (fa_id)
+);
+
+/*==============================================================*/
+/* Table: student                                               */
+/*==============================================================*/
+create table student
+(
+   stu_id               int not null,
+   fa_id                int not null,
+   stu_name             varchar(20),
+   primary key (stu_id)
+);
+
+/*==============================================================*/
+/* Table: 借书                                                    */
+/*==============================================================*/
+create table 借书
+(
+   bo_id                int not null,
+   stu_id               int not null,
+   number               int not null,
+   is_no                int not null,
+   primary key (bo_id, stu_id)
+);
+
+alter table administrators add constraint FK_ying foreign key (em_id)
+      references employee (em_id) on delete restrict on update restrict;
+
+alter table book add constraint FK_bao foreign key (ca_id)
+      references "books category" (ca_id) on delete restrict on update restrict;
+
+alter table "books category" add constraint FK_guan foreign key (ad_id)
+      references administrators (ad_id) on delete restrict on update restrict;
+
+alter table employee add constraint FK_dui foreign key (ad_id)
+      references administrators (ad_id) on delete restrict on update restrict;
+
+alter table student add constraint FK_shu foreign key (fa_id)
+      references faculties (fa_id) on delete restrict on update restrict;
+
+alter table 借书 add constraint FK_jie foreign key (stu_id)
+      references student (stu_id) on delete restrict on update restrict;
+
+alter table 借书 add constraint FK_jie1 foreign key (bo_id)
+      references book (bo_id) on delete restrict on update restrict;
-- 
Gitee