text: -- Structure of table Employee
  CREATE TABLE employee (
  	id INT PRIMARY KEY,
  	name VARCHAR(150),
  	salary REAL
  );
  
  -- Data of table Employee
  INSERT INTO employee 
  	VALUES (1, 'Houari', 12000.00);
  INSERT INTO employee 
  	VALUES (2, 'Mohammed', 20000.00);
  INSERT INTO employee 
  	VALUES (3, 'Omar', 3000.00);
  
  -- Transaction with ROLLBACK
  BEGIN;
  DELETE FROM employee WHERE salary < 4000;
  ROLLBACK;
  
  -- Show data of table
  SELECT * FROM employee;
  
  -- Transaction with COMMIT;
  BEGIN;
  DELETE FROM employee WHERE salary < 4000;
  COMMIT;