You then take the other scenarios and write them as extensions. Instead, a proper use case diagram depicts a high-level overview of the relationship between use cases, actors, and systems. A use case diagram can identify the different types of users of a system and the different use cases and will often be accompanied by other types of diagrams as well. Use cases are a set of actions, services, and functions that the system needs to perform. Basic Flow of Events 5 4.1 Insert Card 5 4.2 Read Card 5 4.3 Authenticate Customer 5 4.4 Select Withdrawal 5 4.5 Select Amount 5 4.6 Confirm Withdrawal 5 Use Case Diagram Use Case Narrative . <> Use Case. A use case is not the place to show your creativity – it needs to be meticulously researched and detailed. Below are few ways to use them. It's typically as… "Use case diagrams are often used to: Provide an overview of all or part of the usage requirements for a system or organization in the form of an essential; model or a business model Communicate the scope of a development project Use Case Example - Extend Relationship The extend relationships are important because they show optional functionality or system behavior. Each use case is represented as a sequence of simple steps, beginning with a user's goal and ending when that goal is fulfilled. Use case description contents include _____ a) Use case name and number b) Actors c) Stakeholder and needs d) All of the mentioned View Answer Answer: d Explanation: Use case includes all of the contents. However, a majority of Use Cases consist of some fundamental contents which may be applied across a wide range of system types. The following use case diagram guidelines will help you to create better use cases that are appreciated by your clients and peers alike. The <> relationship is used to include common behavior from an included use case into a base use case in order to support the reuse of common behavior. To start editing and viewing use case details, right click on the target use case in use case diagram and select Use Case Details...from the pop-up menu. D OCUMENTING U SE C ASES 115 Flow of Events > relationship is after you have completed the first cut description of all your main Use Cases. 2 Use Case Definition 2.1 Description 2.2 Actor 2.3 Priority 2.4 Pre-conditions 2.5 Flow of Events 2.6 Alternative Courses Brief Description 4 2. Example Use Case Description To write the content of a use case, you begin by picking one of the scenarios as the main scenario. You’ll end up with a large number of small use cases, which is harder to manage. 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