情境
This diagram models an expense tracker's core user goals: managing expense categories, logging expenses, and setting/tracking budgets with alert notifications.
這張圖裡有什麼
看懂背後的決策。
01
Grouped category operations under a Manage Categories abstract use case with includes.
02
Used extension point for budget exceeded to trigger send alert, involving external notification service.
Suitable for requirements documentation for personal finance or expense tracking applications where category management and budget monitoring are key features.