diff --git "a/54 \345\217\266\345\255\220\350\261\252/9.13\344\275\234\344\270\232.md" "b/54 \345\217\266\345\255\220\350\261\252/9.13\344\275\234\344\270\232.md"
new file mode 100644
index 0000000000000000000000000000000000000000..d733fafe29f75361b63e426e5a055aea1bed992d
--- /dev/null
+++ "b/54 \345\217\266\345\255\220\350\261\252/9.13\344\275\234\344\270\232.md"	
@@ -0,0 +1,106 @@
+```mysql
+/*==============================================================*/
+/* DBMS name:      MySQL 5.0                                    */
+/* Created on:     2023/9/13 21:45:21                           */
+/*==============================================================*/
+
+
+drop table if exists department;
+
+drop table if exists doctor;
+
+drop table if exists drug;
+
+drop table if exists guahao;
+
+drop table if exists patient;
+
+drop table if exists warehouse;
+
+/*==============================================================*/
+/* Table: department                                            */
+/*==============================================================*/
+create table department
+(
+   department_id        int not null auto_increment,
+   department_name      varchar(20) not null,
+   department_address   varchar(50) not null,
+   primary key (department_id)
+);
+
+/*==============================================================*/
+/* Table: doctor                                                */
+/*==============================================================*/
+create table doctor
+(
+   doctor_id            int not null auto_increment,
+   department_id        int,
+   doctor_name          varchar(10) not null,
+   doctor_age           int not null,
+   doctor_sex           varchar(10) not null,
+   illness              varchar(20) not null,
+   primary key (doctor_id)
+);
+
+/*==============================================================*/
+/* Table: drug                                                  */
+/*==============================================================*/
+create table drug
+(
+   drug_id              int not null auto_increment,
+   drug_name            varchar(20) not null,
+   treatment            varchar(50) not null,
+   primary key (drug_id)
+);
+
+/*==============================================================*/
+/* Table: guahao                                                */
+/*==============================================================*/
+create table guahao
+(
+   patient_id           int not null,
+   doctor_id            int not null,
+   primary key (patient_id, doctor_id)
+);
+
+/*==============================================================*/
+/* Table: patient                                               */
+/*==============================================================*/
+create table patient
+(
+   patient_id           int not null auto_increment,
+   patient_name         varchar(20) not null,
+   patient_age          int not null,
+   patient_sex          varchar(20) not null,
+   symptom              varchar(100) not null,
+   primary key (patient_id)
+);
+
+/*==============================================================*/
+/* Table: warehouse                                             */
+/*==============================================================*/
+create table warehouse
+(
+   drug_id              int not null,
+   doctor_id            int not null,
+   primary key (drug_id, doctor_id)
+);
+
+alter table doctor add constraint FK_Relationship_3 foreign key (department_id)
+      references department (department_id) on delete restrict on update restrict;
+
+alter table guahao add constraint FK_guahao foreign key (patient_id)
+      references patient (patient_id) on delete restrict on update restrict;
+
+alter table guahao add constraint FK_guahao2 foreign key (doctor_id)
+      references doctor (doctor_id) on delete restrict on update restrict;
+
+alter table warehouse add constraint FK_warehouse foreign key (drug_id)
+      references drug (drug_id) on delete restrict on update restrict;
+
+alter table warehouse add constraint FK_warehouse2 foreign key (doctor_id)
+      references doctor (doctor_id) on delete restrict on update restrict;
+
+
+```
+
diff --git "a/54 \345\217\266\345\255\220\350\261\252/\347\254\254\345\205\255\345\244\251\347\254\224\350\256\260.md" "b/54 \345\217\266\345\255\220\350\261\252/\347\254\254\345\205\255\345\244\251\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..c474662cccc732c7a1cfd5fc81373c4b9985813a
--- /dev/null
+++ "b/54 \345\217\266\345\255\220\350\261\252/\347\254\254\345\205\255\345\244\251\347\254\224\350\256\260.md"	
@@ -0,0 +1 @@
+如果一个主体的属性有多个值那这个属性就可以拆成一个新的主体
\ No newline at end of file