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I need to draw a usecase that will expect the user to enter the phone number. But the user will be given 2 attempts to enter the phone number. If both 2 attempts fail, then he will be asked to sign in to the system. How can i draw the usecase for this system ?

enter image description here

What i want to show:

1.) I want to show that a user can only attempt 2 tries to enter the phone number, If both attempts were wrong he will be asked to Login to the system.

Illep
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2 Answers2

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That's not something to be modeled on use-case diagram. Such resolution is reserved to a lower-level modeling corresponding to your Login to the system use-case, such as sequence or activity diagram.

SomeWittyUsername
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Definitely agree. Use a sequence diagram to model behavior. Use-cases should be used to show high-level interaction with the system. In your case, two use cases: Login to the system and Enter Phone #

vainolo
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  • Since the user does not access their functionality directly, I wouldn't model them as use-cases – vainolo Nov 28 '12 at 09:01
  • The `Company System` is directly connected to `Validate Phone Number` (Validation is done in by another system). (Not shown in this diagram). If so is it correct ? – Illep Nov 28 '12 at 09:03