问题
I have a follow up question from CRUD in a use-case diagram?
If i am required to break down complex use case such as "Manage User" (Let's assume this is complex), would it be alright to extend them into different cases? Or should i use include?
回答1:
This is fine. <<extend>> means that the extending UC is optional.
As a side note: avoid <<extend>> and <<include>> since they are a sign of functional decomposition. And that's not what you are supposed to do with use case synthesis. CRUD however is a borderline case. So, this should be fine.
来源：https://stackoverflow.com/questions/41550770/breaking-down-crud-in-use-case-modeling