From de9230b55d84b19dd8b839a390371a126a25f3fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:17:01 +0000
Subject: [PATCH 1/7] =?UTF-8?q?=20=E9=99=88=E5=AE=87=E8=BE=89.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 陈宇辉 <2696103916@qq.com>
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From 5edbb241983348cc62a56d2335d8b449171b361c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:18:02 +0000
Subject: [PATCH 2/7] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=20?=
 =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?=
MIME-Version: 1.0
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---
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From a37f5ced21ca59a9e5f91e75ebac3435885b4b17 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:18:23 +0000
Subject: [PATCH 3/7] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E9=99=88=E5=AE=87?=
 =?UTF-8?q?=E8=BE=89?=
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diff --git "a/\351\231\210\345\256\207\350\276\211/.keep" "b/\351\231\210\345\256\207\350\276\211/.keep"
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index 0000000..e69de29
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From ab1f1a451877087499becf1d518f0b46129a0d2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:18:40 +0000
Subject: [PATCH 4/7] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=20?=
 =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89/.keep?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 "\351\231\210\345\256\207\350\276\211/.keep" | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 "\351\231\210\345\256\207\350\276\211/.keep"

diff --git "a/\351\231\210\345\256\207\350\276\211/.keep" "b/\351\231\210\345\256\207\350\276\211/.keep"
deleted file mode 100644
index e69de29..0000000
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From d97a59eaf3a142afd5a61e1dbb6904ffc9d3786f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:29:53 +0000
Subject: [PATCH 5/7] =?UTF-8?q?=E6=96=B0=E5=BB=BA=2059=20=E9=99=88?=
 =?UTF-8?q?=E5=AE=87=E8=BE=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 "59 \351\231\210\345\256\207\350\276\211/.keep" | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 "59 \351\231\210\345\256\207\350\276\211/.keep"

diff --git "a/59 \351\231\210\345\256\207\350\276\211/.keep" "b/59 \351\231\210\345\256\207\350\276\211/.keep"
new file mode 100644
index 0000000..e69de29
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From 1d2704e6764612825f146987be8d41b51923821e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:30:46 +0000
Subject: [PATCH 6/7] =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 陈宇辉 <2696103916@qq.com>
---
 ...31\210\345\256\207\350\276\21120230905.md" | 89 +++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 "59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230905.md"

diff --git "a/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230905.md" "b/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230905.md"
new file mode 100644
index 0000000..db909d7
--- /dev/null
+++ "b/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230905.md"	
@@ -0,0 +1,89 @@
+```mysql
+CREATE DATABASE school charset utf8;
+use school;
+
+create TABLE college (
+college_id int PRIMARY KEY,
+college_name VARCHAR(20)
+);
+
+insert into college values 
+(1,"智能制造学院"),
+(2,"软件工程学院"),
+(3,"财经商贸学院");
+
+CREATE TABLE major(
+major_id int PRIMARY KEY,
+major_name VARCHAR(20),
+college_id int,
+foreign key (college_id) REFERENCES college(college_id)
+);
+
+insert into major VALUES
+(1,"前端",2),
+(2,"后端",2);
+
+create table class(
+class_id int PRIMARY KEY,
+class_name VARCHAR(20),
+major_id int,
+foreign key (major_id) REFERENCES major(major_id)
+);
+
+insert into class VALUES
+(1,"软件工程技术1班",2),
+(2,"软件工程技术2班",2),
+(3,"软件工程技术3班",2);
+
+create table student(
+student_id int PRIMARY KEY,
+student_name VARCHAR(20),
+student_sex varchar(1),
+student_age int,
+class_id int,
+course_id int,
+foreign key (course_id) REFERENCES course(course_id),
+foreign key (class_id) REFERENCES class(class_id)
+);
+
+insert into student VALUES
+(1,"张三","男",19,1,12),
+(2,"李四","男",19,2,23),
+(3,"王五","男",19,3,123);
+
+CREATE TABLE course(
+course_id int PRIMARY KEY,
+course_name VARCHAR(20)
+);
+
+insert into course VALUES
+(1,"java"),
+(2,"mysql"),
+(3,"c++");
+
+CREATE TABLE teache(
+teacher_id int PRIMARY KEY,
+teacher_name VARCHAR(20),
+teacher_age int,
+teacher_sex VARCHAR(1),
+course_id int,
+FOREIGN KEY (course_id) REFERENCES course(course_id)
+);
+
+insert into teacher VALUES
+(1,"苏拉",36,"男",1),
+(2,"安娜",36,"女",2),
+(3,"雪白",36,"男",3);
+
+
+```
+
+笔记
+
+一对一：将其中任意一个表放在另一个表中
+
+一对多：将一个表放多个表中
+
+多对多：第三个表前两个表主键充当外键
+
+数据库使用E-R图表示各表之间的关系
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From ce4b494177297fc26d9c39d1d125bedf105feb22 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?= <2696103916@qq.com>
Date: Wed, 6 Sep 2023 14:40:51 +0000
Subject: [PATCH 7/7] =?UTF-8?q?=E9=99=88=E5=AE=87=E8=BE=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 陈宇辉 <2696103916@qq.com>
---
 .../\351\231\210\345\256\207\350\276\21120230904.md"           | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 "59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230904.md"

diff --git "a/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230904.md" "b/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230904.md"
new file mode 100644
index 0000000..d13826e
--- /dev/null
+++ "b/59 \351\231\210\345\256\207\350\276\211/\351\231\210\345\256\207\350\276\21120230904.md"	
@@ -0,0 +1,3 @@
+经过这节课让我受益颇多，我学会了如何使用盘搜搜，VIP解析等等，也让我知道我们应该如何去使用自己用友的资源！
+
+最重要是，通过了直接课让我明白了，这学期我上课必须努力听讲，不能想以前那样无所谓，课后也要认真复习，学习更多的是靠自己的制止力！
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