考虑以下用例图
(比如用户登录系统,填写表格并提交给服务器)
(Fill in Form) --<<includes>>---->(Login)
^
\ ^
<<includes>> /
\ /
(sumbit)------<<includes>> <------- Is this include necassary ?
now "Submit" includes "Login"
again "Submit" includes "Fill in Form" which includes "Login"
这两个“包含”似乎是不必要的。
通过包含“填写表格”,它是否自动包含“登录”?什么是正确的?