From d2113930083fe00f5ac8cd18794d14a2e2a220a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AE=B8=E8=8D=A3=E6=B3=95?= <2834314614@qq.com>
Date: Wed, 6 Sep 2023 21:38:39 +0800
Subject: [PATCH 1/5] 2395

---
 ...4 \347\254\254\344\270\200\350\257\276.md" |  7 ++
 20230905 ER.md                                | 67 +++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 "20230904 \347\254\254\344\270\200\350\257\276.md"
 create mode 100644 20230905 ER.md

diff --git "a/20230904 \347\254\254\344\270\200\350\257\276.md" "b/20230904 \347\254\254\344\270\200\350\257\276.md"
new file mode 100644
index 0000000..4bbdc17
--- /dev/null
+++ "b/20230904 \347\254\254\344\270\200\350\257\276.md"	
@@ -0,0 +1,7 @@
+vip解析（粘贴付费视频网址免费浏览）
+
+盘搜搜（搜寻网盘资料）
+
+数据库高级
+
+js
\ No newline at end of file
diff --git a/20230905 ER.md b/20230905 ER.md
new file mode 100644
index 0000000..3706950
--- /dev/null
+++ b/20230905 ER.md	
@@ -0,0 +1,67 @@
+```mysql
+create database school charset utf8;
+use school;
+create table faculty(
+num int primary key,
+name varchar(10)
+);
+insert into faculty values(1,'软工'),(2,'土木');
+
+create table (
+num int primary key,
+name varchar(10),
+fid int,
+foreign key (fid) references faculty(num)
+);
+insert into profession values (1,'软件技术','1'),(2,'打灰抹墙',2);
+
+create table class(
+cid int primary key,
+num int,
+pid int,
+foreign key (pid) references profession(num)
+)
+insert into class values (1,114,1),(2,514,2);
+
+create table student(
+sid int primary key,
+name varchar(10),
+cid int,
+foreign key (cid) references class(cid)
+);
+insert into student values (33,'张三',1),(44,'李四',1),(55,'王五',2);
+
+create table teacher(
+tid int primary key,
+tname varchar(10)
+);
+insert into teacher values (1,'秃头眼镜男'),(2,'包工头');
+
+create table classroom(
+crid int primary key,
+crname varchar(10)
+);
+insert into classroom values (208,'机房'),(408,'露天工地');
+
+create table course(
+courseid int primary key,
+coursename varchar(10),
+tid int,
+crid int,
+foreign key (tid) references teacher(tid),
+foreign key (crid) references classroom(crid)
+);
+insert into course values (1,'编程',1,208),(2,'打灰',2,408);
+
+create table score(
+score int,
+courseid int,
+sid int,
+foreign key (courseid) references course(courseid),
+foreign key (sid) references student(sid)
+);
+insert into score values (93,1,33),(94,1,44),(100,2,55);
+
+```
+
+![](C:\Users\C57BL\Desktop\捕获.JPG)
-- 
Gitee


From 0bd3f469d386f28a96affdfbeb565cf85d94e3c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AE=B8=E8=8D=A3=E6=B3=95?= <2834314614@qq.com>
Date: Wed, 6 Sep 2023 23:50:29 +0000
Subject: [PATCH 2/5] update 20230905 ER.md.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 许荣法 <2834314614@qq.com>
---
 20230905 ER.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/20230905 ER.md b/20230905 ER.md
index 3706950..74d74b5 100644
--- a/20230905 ER.md	
+++ b/20230905 ER.md	
@@ -65,3 +65,8 @@ insert into score values (93,1,33),(94,1,44),(100,2,55);
 ```
 
 ![](C:\Users\C57BL\Desktop\捕获.JPG)
+
+笔记
+多对多时把两个主键放入第三方表写外键
+一对多时将一的主键放入多的表当外键
+一对一时任意
-- 
Gitee


From 45cc50a0d77c982d7ead5d1d5ace8530e5f16ad0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AE=B8=E8=8D=A3=E6=B3=95?= <2834314614@qq.com>
Date: Thu, 7 Sep 2023 00:52:24 +0000
Subject: [PATCH 3/5] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=202023?=
 =?UTF-8?q?0904=20=E7=AC=AC=E4=B8=80=E8=AF=BE.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 "20230904 \347\254\254\344\270\200\350\257\276.md" | 7 -------
 1 file changed, 7 deletions(-)
 delete mode 100644 "20230904 \347\254\254\344\270\200\350\257\276.md"

diff --git "a/20230904 \347\254\254\344\270\200\350\257\276.md" "b/20230904 \347\254\254\344\270\200\350\257\276.md"
deleted file mode 100644
index 4bbdc17..0000000
--- "a/20230904 \347\254\254\344\270\200\350\257\276.md"	
+++ /dev/null
@@ -1,7 +0,0 @@
-vip解析（粘贴付费视频网址免费浏览）
-
-盘搜搜（搜寻网盘资料）
-
-数据库高级
-
-js
\ No newline at end of file
-- 
Gitee


From ae345e8d7abe0f613d9ceb7fbe5524ced96f5be0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AE=B8=E8=8D=A3=E6=B3=95?= <2834314614@qq.com>
Date: Thu, 7 Sep 2023 00:52:32 +0000
Subject: [PATCH 4/5] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=202023?=
 =?UTF-8?q?0905=20ER.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 20230905 ER.md | 72 --------------------------------------------------
 1 file changed, 72 deletions(-)
 delete mode 100644 20230905 ER.md

diff --git a/20230905 ER.md b/20230905 ER.md
deleted file mode 100644
index 74d74b5..0000000
--- a/20230905 ER.md	
+++ /dev/null
@@ -1,72 +0,0 @@
-```mysql
-create database school charset utf8;
-use school;
-create table faculty(
-num int primary key,
-name varchar(10)
-);
-insert into faculty values(1,'软工'),(2,'土木');
-
-create table (
-num int primary key,
-name varchar(10),
-fid int,
-foreign key (fid) references faculty(num)
-);
-insert into profession values (1,'软件技术','1'),(2,'打灰抹墙',2);
-
-create table class(
-cid int primary key,
-num int,
-pid int,
-foreign key (pid) references profession(num)
-)
-insert into class values (1,114,1),(2,514,2);
-
-create table student(
-sid int primary key,
-name varchar(10),
-cid int,
-foreign key (cid) references class(cid)
-);
-insert into student values (33,'张三',1),(44,'李四',1),(55,'王五',2);
-
-create table teacher(
-tid int primary key,
-tname varchar(10)
-);
-insert into teacher values (1,'秃头眼镜男'),(2,'包工头');
-
-create table classroom(
-crid int primary key,
-crname varchar(10)
-);
-insert into classroom values (208,'机房'),(408,'露天工地');
-
-create table course(
-courseid int primary key,
-coursename varchar(10),
-tid int,
-crid int,
-foreign key (tid) references teacher(tid),
-foreign key (crid) references classroom(crid)
-);
-insert into course values (1,'编程',1,208),(2,'打灰',2,408);
-
-create table score(
-score int,
-courseid int,
-sid int,
-foreign key (courseid) references course(courseid),
-foreign key (sid) references student(sid)
-);
-insert into score values (93,1,33),(94,1,44),(100,2,55);
-
-```
-
-![](C:\Users\C57BL\Desktop\捕获.JPG)
-
-笔记
-多对多时把两个主键放入第三方表写外键
-一对多时将一的主键放入多的表当外键
-一对一时任意
-- 
Gitee


From 0e867b9bc1aa76c6eee5b8c69c21682df8f10fdd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AE=B8=E8=8D=A3=E6=B3=95?= <2834314614@qq.com>
Date: Thu, 7 Sep 2023 13:34:16 +0800
Subject: [PATCH 5/5] =?UTF-8?q?=E9=94=9F=E6=96=A4=E6=8B=B7?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...4 \347\254\254\344\270\200\350\257\276.md" |  7 ++
 .../20230905 ER.md"                           | 78 +++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 "08 \350\256\270\350\215\243\346\263\225/20230904 \347\254\254\344\270\200\350\257\276.md"
 create mode 100644 "08 \350\256\270\350\215\243\346\263\225/20230905 ER.md"

diff --git "a/08 \350\256\270\350\215\243\346\263\225/20230904 \347\254\254\344\270\200\350\257\276.md" "b/08 \350\256\270\350\215\243\346\263\225/20230904 \347\254\254\344\270\200\350\257\276.md"
new file mode 100644
index 0000000..4bbdc17
--- /dev/null
+++ "b/08 \350\256\270\350\215\243\346\263\225/20230904 \347\254\254\344\270\200\350\257\276.md"	
@@ -0,0 +1,7 @@
+vip解析（粘贴付费视频网址免费浏览）
+
+盘搜搜（搜寻网盘资料）
+
+数据库高级
+
+js
\ No newline at end of file
diff --git "a/08 \350\256\270\350\215\243\346\263\225/20230905 ER.md" "b/08 \350\256\270\350\215\243\346\263\225/20230905 ER.md"
new file mode 100644
index 0000000..88341a2
--- /dev/null
+++ "b/08 \350\256\270\350\215\243\346\263\225/20230905 ER.md"	
@@ -0,0 +1,78 @@
+```mysql
+create database school charset utf8;
+use school;
+create table faculty(
+num int primary key,
+name varchar(10)
+);
+
+
+create table profession(
+num int primary key,
+name varchar(10),
+fid int,
+foreign key (fid) references faculty(num)
+);
+
+
+create table class(
+cid int primary key,
+num int,
+pid int,
+foreign key (pid) references profession(num)
+);
+
+
+create table student(
+sid int primary key,
+name varchar(10),
+cid int,
+foreign key (cid) references class(cid)
+);
+
+
+create table teacher(
+tid int primary key,
+tname varchar(10)
+);
+
+
+create table classroom(
+crid int primary key,
+crname varchar(10)
+);
+
+
+create table course(
+courseid int primary key,
+coursename varchar(10),
+tid int,
+crid int,
+foreign key (tid) references teacher(tid),
+foreign key (crid) references classroom(crid)
+);
+
+
+create table score(
+score int,
+courseid int,
+sid int,
+foreign key (courseid) references course(courseid),
+foreign key (sid) references student(sid)
+);
+insert into faculty values(1,'软工'),(2,'土木');
+insert into profession values (1,'软件技术','1'),(2,'打灰抹墙',2);
+insert into class values (1,114,1),(2,514,2);
+insert into student values (33,'张三',1),(44,'李四',1),(55,'王五',2);
+insert into teacher values (1,'秃头眼镜男'),(2,'包工头');
+insert into classroom values (208,'机房'),(408,'露天工地');
+insert into course values (1,'编程',1,208),(2,'打灰',2,408);
+insert into score values (93,1,33),(94,1,44),(100,2,55);
+```
+
+
+
+笔记
+多对多时把两个主键放入第三方表写外键
+一对多时将一的主键放入多的表当外键
+一对一时任意
-- 
Gitee