notes.txt

- view all departments, 
- view all roles, 
view all employees, 
add a department, 
add a role, 
add an employee, 
and update an employee role


try to add some additional functionality to your application, such as the ability to do the following:

Update employee managers.

View employees by manager.

View employees by department.

Delete departments, roles, and employees.

View the total utilized budget of a department—in other words, the combined salaries of all employees in that department.

+-----------------------------------+-----------------+
| job_title                         | department      |
+-----------------------------------+-----------------+
| swiper                            | logistics       |
| assistant to the regional manager | sales           |
| pencil pusher                     | human resources |
+----------------------------------