diff --git a/DAY 9/emp.sql b/DAY 9/emp.sql
new file mode 100644
index 0000000..63f0122
--- /dev/null
+++ b/DAY 9/emp.sql	
@@ -0,0 +1,119 @@
+mysql> create database employee;
+mysql> use employee;
+mysql> insert into employee28 values(232235,'Narmatha','computer technology',250000,'2012-03-03');
+mysql> insert into employee28 values(232240,'shree','computer science',250400,'2023-01-04');
+mysql> insert into employee28 values(234567,'swetha','finance',320001,'2023-06-13');
+mysql> insert into employee28 values(234578,'sanjana','web',120000,'2016-11-08');
+mysql> select*from employee28;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | dept                   | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 232235 | Narmatha | computer technology    | 250000 | 2012-03-03 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 |
++--------+----------+------------------------+--------+------------+
+mysql> select* from employee28 where dept='computer technology';
++--------+----------+----------------+--------+------------+------+
+| empid  | name     | dept           | salary | joindate   | sec  |
++--------+----------+----------------+--------+------------+------+
+| 232235 | Narmatha | cyber security | 250000 | 2012-03-03 | A    |
++--------+----------+----------------+--------+------------+------+
+mysql> update employee28 set dept='cyber security' where name='Narmatha';
+mysql>  select*from employee28;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | dept                   | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 |
++--------+----------+------------------------+--------+------------+
+mysql> alter table employee28 add column sec varchar(1);
+mysql> select*from employee28;
++--------+----------+------------------------+--------+------------+------+
+| empid  | name     | dept                   | salary | joindate   | sec  |
++--------+----------+------------------------+--------+------------+------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 | NULL |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 | NULL |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 | NULL |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 | NULL |
++--------+----------+------------------------+--------+------------+------+
+mysql> alter table employee28 rename to emp;
+mysql> select*from emp;
++--------+----------+------------------------+--------+------------+------+
+| empid  | name     | dept                   | salary | joindate   | sec  |
++--------+----------+------------------------+--------+------------+------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 | A    |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 | B    |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 | G    |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 | F    |
++--------+----------+------------------------+--------+------------+------+
+mysql> alter table emp rename column dept to department;
+mysql> select*from emp;
++--------+----------+------------------------+--------+------------+------+
+| empid  | name     | department             | salary | joindate   | sec  |
++--------+----------+------------------------+--------+------------+------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 | A    |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 | B    |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 | G    |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 | F    |
++--------+----------+------------------------+--------+------------+------+
+mysql> alter table emp drop column sec;
+mysql> select*from emp;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | department             | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
+| 234578 | sanjana  | web                    | 120000 | 2016-11-08 | 
++--------+----------+------------------------+--------+------------+
+mysql> delete from emp where name='sanjana';
+mysql> select*from emp;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | department             | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 234540 | pavi     | information technology | 120000 | 2022-09-12 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
++--------+----------+------------------------+--------+------------+
+mysql> select*from emp order by department;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | department             | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 234578 | suba     | accounts               | 120000 | 2012-12-03 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
+| 234540 | pavi     | information technology | 120000 | 2022-09-12 |
++--------+----------+------------------------+--------+------------+
+
+mysql> select*from emp order by salary desc;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | department             | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 234540 | pavi     | information technology | 120000 | 2022-09-12 |
+| 234578 | suba     | accounts               | 120000 | 2012-12-03 |
++--------+----------+------------------------+--------+------------+
+mysql> select*from emp order by name,department;
++--------+----------+------------------------+--------+------------+
+| empid  | name     | department             | salary | joindate   |
++--------+----------+------------------------+--------+------------+
+| 232235 | Narmatha | cyber security         | 250000 | 2012-03-03 |
+| 234540 | pavi     | information technology | 120000 | 2022-09-12 |
+| 232240 | shree    | computer science       | 250400 | 2023-01-04 |
+| 234578 | suba     | accounts               | 120000 | 2012-12-03 |
+| 234567 | swetha   | finance                | 320001 | 2023-06-13 |
++--------+----------+------------------------+--------+------------+
+
+mysql> select*from emp where name='shree'and salary > 25000;
++--------+-------+------------------+--------+------------+
+| empid  | name  | department       | salary | joindate   |
++--------+-------+------------------+--------+------------+
+| 232240 | shree | computer science | 250400 | 2023-01-04 |
++--------+-------+------------------+--------+------------+