For requirement number 3- Choose a system that will support a key business… :
specify the system requirements, what the system should do and what does it look like (focus on functionality).
For requirement number 4- Identify and list the logical requirements… :
propose new system for the company because there is a problem with the current one. The problem may be manual that needs to be computerized or the problem is about not containing a lot of functions so we need to extend the functions