1. Write a query to display the records from employee. 2. Write a query to update the records from employee SALARY=20000 only for the employee number = 105; 3. Write a query to delete records from employee having the number 109. 4. Write a query to implement the save point S1. 5. Write a query to implement the Rollback to the last save point $1. 6. Write a query to implement the COMMIT.