diff --git a/src/hello_postgres/__main__.py b/src/hello_postgres/__main__.py
index 225ed79..60e0f05 100644
--- a/src/hello_postgres/__main__.py
+++ b/src/hello_postgres/__main__.py
@@ -1,5 +1,6 @@
 # https://www.freecodecamp.org/news/postgresql-in-python/
 # https://www.datacamp.com/tutorial/tutorial-postgresql-python
+# docker compose down && docker compose up -d && hello-postgres
 import psycopg2
 import dotenv
 import os 
@@ -32,7 +33,18 @@ def main():
     cursor.execute("INSERT INTO datacamp_courses(course_name, course_instructor, topic) VALUES('Hypothesis Testing in Python','James Chapman','Python')");
     print("Committing the table to the database...")
     conn.commit()
+    print("Fetching all the available rows...")
+    cursor.execute('SELECT * FROM datacamp_courses;')
+    rows = cursor.fetchall()
+    for row in rows:
+        print(row)
     print("Closing the connection and the cursor...")
+    print("Changing topic \"Julia\" to \"SQL\"...")
+    cursor.execute("UPDATE datacamp_courses SET topic = 'SQL' WHERE course_name = 'Introduction to SQL';")
+    conn.commit()
+    print("Deleting \"Introduction to Statistics in R\"...")
+    cursor.execute("DELETE from datacamp_courses WHERE course_name = 'Introduction to Statistics in R';")
+    conn.commit()
     cursor.close()
     conn.close()
     # cursor.execute("SELECT * FROM DB_table WHERE id = 1")