Нашёл в одной из книжек пример для определения функциональных и нефункциональных требований. Так как не все очевидные, решил спросит ваших мнений, что есть что.
Requirements for Proposed System:
The system should…
1. be accessible to Web users.
2. include the company standard logo and color scheme.
3. restrict access to profitability information.
4. include actual and budgeted cost information.
5. provide management reports.
6. include sales information that is updated at least
daily.
7. have 2-second maximum response time for predefined queries and 10-minute maximum response time
for ad hoc queries.
8. include information from all company subsidiaries.
9. print subsidiary reports in the primary language of
the subsidiary.
10. provide monthly rankings of salesperson performance