From dc511345db3d19102c720255fa3637eeb49e259f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B0=A2=E9=93=96=E6=B5=A9?= <1136734375@qq.com>
Date: Mon, 11 Sep 2023 22:39:57 +0800
Subject: [PATCH] zy

---
 ...46\351\246\206\344\275\234\344\270\232.md" | 51 +++++++++++++++++++
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 create mode 100644 "05 \350\260\242\351\223\226\346\265\251/\345\233\276\344\271\246\351\246\206\344\275\234\344\270\232.md"

diff --git "a/05 \350\260\242\351\223\226\346\265\251/\345\233\276\344\271\246\351\246\206\344\275\234\344\270\232.md" "b/05 \350\260\242\351\223\226\346\265\251/\345\233\276\344\271\246\351\246\206\344\275\234\344\270\232.md"
new file mode 100644
index 0000000..4b5b337
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/\345\233\276\344\271\246\351\246\206\344\275\234\344\270\232.md"	
@@ -0,0 +1,51 @@
+图书馆作业
+
+CREATE DATABASE bookstore CHARSET utf8;
+use bookstore;
+CREATE table admi(
+admi_Id VARCHAR(20) not null,
+admi_name VARCHAR(20) not null,
+admi_age VARCHAR(20) not null,
+admi_gender VARCHAR(20) not null,
+PRIMARY key(admi_id)
+);
+CREATE table library(
+li_id VARCHAR(20) not null PRIMARY key,
+li_address VARCHAR(20) not null,
+admi_Id VARCHAR(20) not null,
+FOREIGN key (admi_id)REFERENCES admi(admi_id)
+);
+CREATE table books(
+book_id VARCHAR(20) PRIMARY key,
+book_name VARCHAR(20),
+li_id VARCHAR(20) not null,
+FOREIGN key (li_id)REFERENCES library(li_id)
+);
+CREATE table student(
+st_id VARCHAR(20),
+st_name VARCHAR(20),
+st_age VARCHAR(20),
+st_gender VARCHAR(20),
+book_id VARCHAR(20),
+FOREIGN key (book_id) REFERENCES books(book_id)
+);
+CREATE table press(
+pr_id VARCHAR(20),
+pr_name VARCHAR(20),
+pr_phone VARCHAR(20),
+pr_add VARCHAR(20),
+book_id VARCHAR(20),
+FOREIGN key (book_id) REFERENCES books(book_id)
+);
+
+笔记
+
+软件 powerpesigner
+
+第一步 创建概念模型
+
+第二部 转成逻辑模型 ldk
+
+第三部 转换成物理模型pdk
+
+第四步 生成DDL
\ No newline at end of file
-- 
Gitee