Good. But the word "management" is rather vague. What do employees DO? Is it inventory management or inventory control or inventory tracking? What is the back-end? Sales tracking makes sense. Functional requirements are about performance. Use cases show you how users interact with functional requirements. Non-functional reqs are NOT about interface (touch screen), but about usability (e.g., easy to use interface) - but you have that already. Non-functional reqs are constraints on performance; not what you propose.
Good. But the word "management" is rather vague. What do employees DO? Is it inventory management or inventory control or inventory tracking? What is the back-end? Sales tracking makes sense. Functional requirements are about performance. Use cases show you how users interact with functional requirements. Non-functional reqs are NOT about interface (touch screen), but about usability (e.g., easy to use interface) - but you have that already. Non-functional reqs are constraints on performance; not what you propose.
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