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@@ -0,0 +1,114 @@
+# 作业
+
+<a href="https://sm.ms/image/wlxHTKAuSFO92gM" target="_blank"><img src="https://s2.loli.net/2023/09/13/wlxHTKAuSFO92gM.png" ></a>
+
+```mysql
+/*==============================================================*/
+/* DBMS name:      MySQL 5.0                                    */
+/* Created on:     2023-09-13 17:26:56                          */
+/*==============================================================*/
+
+create database hospital charset utf8;
+use hospital;
+
+drop table if exists cure;
+
+drop table if exists doctor;
+
+drop table if exists drug;
+
+drop table if exists grab;
+
+drop table if exists patient;
+
+/*==============================================================*/
+/* Table: cure                                                  */
+/*==============================================================*/
+
+/*==============================================================*/
+/* Table: doctor                                                */
+/*==============================================================*/
+create table doctor #医生
+(
+   d_id                 int(2) not null auto_increment, # 医生编号
+   d_name               varchar(5) not null,            # 医生姓名
+   d_type               varchar(10) not null,           # 医生类型
+   d_sex                varchar(2) not null,            # 医生性别
+   d_age                varchar(2) not null,            # 医生年龄
+   primary key (d_id)
+);
+insert into doctor (d_id,d_name,d_type,d_sex,d_age) values
+('1','陈佳炜','胃科','男','18'),
+('2','林俊伟','妇产科','女','18'),
+('3','代瑞','脑科','男','18');
+
+/*==============================================================*/
+/* Table: drug                                                  */
+/*==============================================================*/
+create table drug #药品
+(
+   dr_id                int(2) not null auto_increment, # 药品编号
+   dr_name              varchar(5) not null,            # 药品名称
+   primary key (dr_id)
+);
+insert into drug (dr_id,dr_name) values
+('1','止泻药'),
+('2','阿司匹林'),
+('3','胃炎药');
+
+/*==============================================================*/
+/* Table: grab                                                  */
+/*==============================================================*/
+
+/*==============================================================*/
+/* Table: patient                                               */
+/*==============================================================*/
+create table patient #病人
+(
+   p_id                 int(2) not null auto_increment, #病人病号
+   p_name               varchar(5) not null,            #病人姓名
+   p_symptom            varchar(10) not null,           #病人症状
+   p_sex                varchar(2) not null,            #病人性别
+   p_age                varchar(2) not null,            #病人年龄
+   primary key (p_id)
+);
+insert into patient (p_id,p_name,p_symptom,p_sex,p_age) values
+('1','张三','头疼','男','18'),
+('2','李四','肚子疼','男','18'),
+('3','王五','胃炎','男','18');
+create table cure #开药单
+(
+   p_id                 int not null,     #病人病号
+   d_id                 int not null,     #医生编号
+   primary key (p_id, d_id)
+);
+
+insert into cure (p_id,d_id)values
+('1','2'),
+('2','1'),
+('3','1');
+create table grab #抓
+(
+   p_id                 int not null,     #病人病号
+   dr_id                int not null,     #药品编号
+   primary key (p_id, dr_id)
+);
+insert into grab (p_id,dr_id) values
+('1','2'),
+('2','1'),
+('3','3');
+alter table cure add constraint FK_cure foreign key (p_id)
+      references patient (p_id) on delete restrict on update restrict;
+
+alter table cure add constraint FK_cure2 foreign key (d_id)
+      references doctor (d_id) on delete restrict on update restrict;
+
+alter table grab add constraint FK_grab foreign key (p_id)
+      references patient (p_id) on delete restrict on update restrict;
+
+alter table grab add constraint FK_grab2 foreign key (dr_id)
+      references drug (dr_id) on delete restrict on update restrict;
+
+
+```
+