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Questions tagged [use-case-diagram]

191 questions
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Primary Actor in Use Case

Let's assume we have use case that can be triggered by two or more actors e.g. User1 and User2. It will have the exact same flow for both actors. How should I describe this use case correctly? Who is the primary actor - User1 or User2? Should I make…
Daniel
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Need help creating a Use Case Diagram

I have to create a Use Case Diagram for a project management software. What I need to take into account is which are the actors working with the software and which are the important activities. That's how I made it: Is it correct, did I choose the…
jay252
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Should i Include system as an actor in my use case diagram?

Should I Include the system as an actor in my use case diagram? I am working on an app which have added a rating for an institute here is the use case diagram I made, should there be a system as an actor in this use case diagram.
Faseeh
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Should an actor be secondary when used "asynchronously"?

In a UML Use Case diagram, consider two actors named A and B, and a use case called "Organize event". We want to model the fact that A can enable "Organize event" using the modeled system, but that B needs to give its approval for the organization…
Gwendal
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Alternate scenarios in Use Case Diagram (If conditions)

Do we include if conditions/alternate scenarios in a use case diagram? Actually, I am making a use case diagram for a book order application. It has this condition that if the number of copies ordered are less than the copies of book available then…
theLearner
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Use Case Diagram for Login Module

I made a simple Use Case for Login module I was working on. In there I have three types of ways to log in and I was wondering if this is the correct way. Or is it better if I have a single Login process and the Facebook, Email and Google are…
Zahir
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What does association between an actor and a use case which is an extension form another use case mean?

Does the above diagram mean that general Actor can perform UseCase1 which may include UseCase2, but Actor2 can only perform UseCase2. Or, it means that an Actor has to be Actor 2 to perform extended UseCase2? What does it mean and what the diagram…
samman adhikari
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Describe the flow of events and sequence diagram of a shared use case

I have this kind of situation where I have multiple actors which share the same use case. I cannot figure out from which point of view I should write the flow of events and describe the sequence diagram of this specific use case, having more than…
aculf
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Should I use n or * if I have exact number of things in the model?

I need to create UML diagrams for homework about a game ( called Downfall). I have to create it so that it works on any number (n) of player. If this is an exact number that appears in multiple places of the diagram, should I use n or *? I would use…
KijeviGombooc
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How to represent generalization relationships in use case specfications?

I have use cases like this: get from here When I showed my teacher this, she had required specifying all use cases and representing generalization in document. She want me to reuse Manage Account specfication in Add Account, Delete Account, Edit…
leminhnguyen
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Specify primary/secondary actors properly (UML Use-Case Diagram)

Consider the following case: I have a webservice that provides information about orders in an online shop. On another machine there is a windows service that retrieves orders from the webservice once an hour and writes the data to a database.…
Erik T.
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Why do we need to separate or breakdown one Use Case into two or more use cases?

Why do you need to, in many instances, separate or breakdown one Use Case into two or more use cases?
teddy
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UML Diagram: Can I use two or more same usecase in one usecase diagram?

I want to duplicate a use case on a diagram to make it easier to look at. Below is the example. Actor F can do use case C and E. So I duplicated the C use case so I don't cross actor B's association.
Andika Romansyah
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Usecase Plantuml - Vertically stack the components

I'm trying to link the same object to multiple objects within the box. But the objects within the box are laying horizontally instead of vertical. :Application: rectangle Set{ Application-right--> (Set Property) (Set…
kiran Biradar
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How To Create A Class Diagram From A Use Case

Has anyone got any pointers or can help me with doing a class diagram from a Use Case Diagram? Its been a few years since i have done one and i am at a complete loss. Not sure how to link the image straight into the post. I don't need anything…
ShabbyAlonso
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