diff --git "a/56 \350\265\265\346\225\217/20230914\345\214\273\351\231\242.md" "b/56 \350\265\265\346\225\217/20230914\345\214\273\351\231\242.md"
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@@ -0,0 +1,143 @@
+作业
+
+```
+/*==============================================================*/
+/* DBMS name:      MySQL 5.0                                    */
+/* Created on:     2023/9/14 9:47:40                            */
+/*==============================================================*/
+
+CREATE DATABASE z CHARSET utf8;
+use z;
+drop table if exists diagnose2;
+
+drop table if exists doctor;
+
+drop table if exists drug;
+
+drop table if exists patient;
+
+drop table if exists pharmacy;
+
+drop table if exists prescription;
+
+drop table if exists registration;
+
+drop table if exists type;
+
+/*==============================================================*/
+/* Table: diagnose2                                             */
+/*==============================================================*/
+create table diagnose2
+(
+   patient_id           int not null,
+   doctor_id            int not null,
+   illness              varchar(255) not null,
+   primary key (patient_id, doctor_id)
+);
+
+/*==============================================================*/
+/* Table: doctor                                                */
+/*==============================================================*/
+create table doctor
+(
+   doctor_id            int not null auto_increment,
+   type_id              int,
+   doctor_name          varchar(10) not null,
+   primary key (doctor_id)
+);
+
+/*==============================================================*/
+/* Table: drug                                                  */
+/*==============================================================*/
+create table drug
+(
+   drug_id              int not null auto_increment,
+   drug_name            varchar(20) not null,
+   drug_intro           varchar(200) not null,
+   primary key (drug_id)
+);
+
+/*==============================================================*/
+/* Table: patient                                               */
+/*==============================================================*/
+create table patient
+(
+   patient_id           int not null auto_increment,
+   patient_name         varchar(5) not null,
+   patient_sex          char(1) not null,
+   primary key (patient_id)
+);
+
+/*==============================================================*/
+/* Table: pharmacy                                              */
+/*==============================================================*/
+create table pharmacy
+(
+   pharmacy             int not null auto_increment,
+   pharmacy_name        varchar(10) not null,
+   primary key (pharmacy)
+);
+
+/*==============================================================*/
+/* Table: prescription                                          */
+/*==============================================================*/
+create table prescription
+(
+   prescription_id      int not null,
+   doctor_id            int,
+   patient_id           int,
+   drug_id              int,
+   pharmacy             int,
+   primary key (prescription_id)
+);
+
+/*==============================================================*/
+/* Table: registration                                          */
+/*==============================================================*/
+create table registration
+(
+   reg_id               char(10) not null,
+   doctor_id            int not null,
+   patient_id           int not null,
+   primary key (reg_id, doctor_id, patient_id)
+);
+
+/*==============================================================*/
+/* Table: type                                                  */
+/*==============================================================*/
+create table type
+(
+   type_id              int not null auto_increment,
+   type_name            varchar(5) not null,
+   primary key (type_id)
+);
+
+alter table diagnose2 add constraint FK_diagnose foreign key (patient_id)
+      references patient (patient_id) on delete restrict on update restrict;
+
+alter table diagnose2 add constraint FK_diagnose2 foreign key (doctor_id)
+      references doctor (doctor_id) on delete restrict on update restrict;
+
+alter table doctor add constraint FK_Relationship_5 foreign key (type_id)
+      references type (type_id) on delete restrict on update restrict;
+
+alter table prescription add constraint FK_Relationship_6 foreign key (doctor_id)
+      references doctor (doctor_id) on delete restrict on update restrict;
+
+alter table prescription add constraint FK_Relationship_7 foreign key (patient_id)
+      references patient (patient_id) on delete restrict on update restrict;
+
+alter table prescription add constraint FK_Relationship_8 foreign key (drug_id)
+      references drug (drug_id) on delete restrict on update restrict;
+
+alter table prescription add constraint FK_Relationship_9 foreign key (pharmacy)
+      references pharmacy (pharmacy) on delete restrict on update restrict;
+
+alter table registration add constraint FK_registration foreign key (doctor_id)
+      references doctor (doctor_id) on delete restrict on update restrict;
+
+alter table registration add constraint FK_registration2 foreign key (patient_id)
+      references patient (patient_id) on delete restrict on update restrict;
+
+```
+