6/19/2023 0 Comments Extend in use case diagrams![]() ![]() You can build a use Case Inventory from the diagram that essentially will help you trace your requirements. The more you get into this you will realize that there will be the details that will get to you. You can get as detailed as you want in terms of the use cases. You can use a workflow tool such as Vizio or Lucid Chart to build this out. UC 5 – Add to cart – View Cart, edit cart What are the activities identified in the Activity Diagram?. ![]() This is the starting point to building your use case diagram and narratives.Ĭustomer (Registered and New), Admin, Restaurant Employee Description Use Case Section 2: Covers the Main Success aka Happy Path Scenario Section 3: This covers the alternate and the exception paths Section 4: Covers the Non Functional Requirements and the Open Items with any additional future date requirements Steps to building the Use Case Narrative and the Use Case Diagram. The template below provide the descriptions. Use Case Narrative Components Section 1: Section 1 of this narrative includes the General Characteristics of a use case narrative. The included use case is mandatory and not optional. ![]() The base use case is incomplete without the included use case. ![]() Few things to consider when using the > relationship. In some situations, this is done to simplify complex behaviors. The main reason for this is to reuse common actions across multiple use cases. The dotted line going away from the main use case: Include relationship show that the behavior of the included use case is part of the including (base) use case. The extended (base) use case must be meaningful on its own. The extending use case is usually optional and can be triggered conditionally. The extending use case is dependent on the extended (base) use case. 3 characteristics of an extend use case are: Here are a few things to consider when using the > relationship. As the name implies it extends the base use case and adds more functionality to the system. The dotted arrows toward the Main Use Case = Extend relationships. The rectangular box = the System Boundary An actor to the right would indicate someone in the back end interacting with the system. An actor to the left of the diagram typically represents the a person that will input a system. I will break down what each component means for you.Īctor = Stakeholder.
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