How to present a condition of use?

Question

I have this problem, my system is a clothing store that allows the customer to return the fabrics he bought after only one day of purchase.

Returning fabrics is a precedent ... but how can I imagine a one-day condition? I was thinking about using the Guard mode, what do you think?

Answer 1

That you actually have two different use cases that have a common effect.

You want to create a basic use case for “Try returning clothes,” and then extend it to two different use cases that generalize to it, for example:

• " "
• " 1 " " "
• " 1 " " "

, . , , .

Answer 2

, .

• : UML , ., , . , ( ), .
• , (< 1 /" >= 1 ). [, , , ].
• , " " (, ), , ( > 1 ).

:

• ,
• (1 )
• ... ...

:

2.

3 ...

. . : .

Answer 3

conditional statements are not used in use cases because the conditions consist of behavior. Such a use-case precedent is strange. use peremptory statements for your use cases, such as: "make registration", "complete order", etc.