diff --git a/index.sql b/index.sql
index 3a4edf8..c8ebba5 100644
--- a/index.sql
+++ b/index.sql
@@ -1,10 +1,16 @@
-SELECT * from  employees;
+-- View all employees
+SELECT * 
+FROM employees;
 
+-- Analyze query performance for a specific employee
+EXPLAIN ANALYZE
+SELECT * 
+FROM employees
+WHERE emp_no = 10004;  -- Removed quotes if emp_no is numeric
 
-EXPLAIN ANALYSE
-SELECT * from employees WHERE emp_no = '10004';
-
+-- Create an index on last_name for faster searches
 CREATE INDEX idx_employees_last_name
-on employees (last_name);
+ON employees (last_name);
 
-SHOW data_directory;
\ No newline at end of file
+-- Check the data directory of the database
+SHOW data_directory;