diff --git "a/\350\260\242\351\207\221\351\207\221/9.15biji.txt" "b/\350\260\242\351\207\221\351\207\221/9.15biji.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..edc597ef7f355594ba1b359143e19a6532130850
--- /dev/null
+++ "b/\350\260\242\351\207\221\351\207\221/9.15biji.txt"
@@ -0,0 +1,11 @@
+create database 创建数据库
+use DBTEST使用当前数据库
+create table 创建表
+primary key主键
+identity(1,1)自增
+ not null非空
+ check 约束
+unique 唯一约束
+references +表名（字段） 外键
+check(userAge between 1 and 100)
+限制年龄
\ No newline at end of file
diff --git "a/\350\260\242\351\207\221\351\207\221/zy9.15.sql" "b/\350\260\242\351\207\221\351\207\221/zy9.15.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..ed10867d5f4ce0489ce2a021570deccf59f6cad3
--- /dev/null
+++ "b/\350\260\242\351\207\221\351\207\221/zy9.15.sql"
@@ -0,0 +1,101 @@
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+ create database DBTEST;
+  use DBTEST;
+  create table sectionInfo(
+		sectionID  int primary key identity(1,1),
+		sectionName  varchar(10)  not null,
+  )
+  create table userInfo(
+		userNo  int primary key identity(1,1) not null,
+		userName  varchar(10) check(len(userName)>4) unique not null,
+		userSex   varchar(2) not null  check(userSex='男' or userSex ='女'),
+		userAge   int not null check(userAge between 1 and 100),
+		userAddress  varchar(50) default('湖北'),
+		userSection  int references sectionInfo(sectionID)
+  )
+  create table workInfo(
+		workId int primary key identity(1,1) not null,
+		userId  int references userInfo(userNo) not null,
+		workTime datetime not null,
+		workDescription  varchar(40) not null  check(workDescription='迟到' or workDescription='旷工' or workDescription='病假' or workDescription='事假')
+  )
+  insert into sectionInfo(sectionName)
+  values('张三')
+  insert into sectionInfo(sectionName)
+  values('李四')
+  insert into sectionInfo(sectionName)
+  values('王五')
+  insert into sectionInfo(sectionName)
+  values('老六')
+  insert into sectionInfo(sectionName)
+  values('七七')
+  insert into userInfo(userName,userSex,userAge,userAddress,userSection)
+  values('张三','男','28','福建','1')
+  insert into userInfo(userName,userSex,userAge,userAddress,userSection)
+  values('李四','男','38','江西','2')
+  insert into userInfo(userName,userSex,userAge,userAddress,userSection)
+  values('王五','男','48','福建','3')
+  insert into userInfo(userName,userSex,userAge,userAddress,userSection)
+  values('老六','男','18','湖北','4')
+  insert into userInfo(userName,userSex,userAge,userAddress,userSection)
+  values('七七','女','18','重庆','5')
+  insert into workInfo(userId,workTime,workDescription)
+  values('1','2022年9月15日17:21:04','迟到')
+  insert into workInfo(userId,workTime,workDescription)
+  values('2','2022年9月15日17:21:07','早退')
+  insert into workInfo(userId,workTime,workDescription)
+  values('3','2022年9月15日17:21:15','旷工')
+  insert into workInfo(userId,workTime,workDescription)
+  values('1','2022年9月15日17:21:28','迟到')
+  insert into workInfo(userId,workTime,workDescription)
+  values('1','2022年9月1日17:21:09','迟到')
+