User Stories vs Use Cases. Tip 7. Use Case Main Flow, or Main Path, is the typical scenario that leads to successful completion of the Actor's goal. Typically, while the name of your use case is being discussed, people will start briefly describing the use case. The use case may take any of the alternate flow branches or may follow the normal flow. A use case represents a function or an action within the system. When you enter the first two characters of an Actor's name, TopTeam will intelligently prompt you to select the Actor from a pop-up list. A teaching case is not a "case study" of the type used in academic research. â¢ Describe the steps for preparing a use-case model. â¢ Describe the relationships that can appear on a use- case model diagram. This an optional element but useful when youâre visualizing large systems. Use plain english and keep it â¦ The use case description is a narrative document that describes, in general terms, the required functionality of the use case. As mentioned, the three basic elements that make up a use case are actors, the system and the goal. Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions () that some system or systems () should or can perform in collaboration with one or more external users of the system ().Each use case should provide some observable and valuable result to the actors or other stakeholders of the system. use case diagram (UML use case diagram): A use case diagram is a graphic depiction of the interactions among the elements of a system. Use cases that describe business processes are typically of the enterprise scope. The system is used to define the scope of the use case and drawn as a rectangle. Teaching cases provide information, but neither analysis nor conclusions. Carol Britton, Jill Doake, in A Student Guide to Object-Oriented Development, 2005. Use Case Scenarios. Itâs way easier when youâre actually writing the use case and getting all to the steps to where the last step is that the user receives their course registration email. Outline everything the user does and how the technology or process responds to those actions. 2 The system delays for 5 minutes indicating that the system is busy (the system should try to keep the Customer at the machine for as long as possible). User Stories often start out the same way as Use Cases, in that each describes one way to use the system, is centered around a goal, is written from the perspective of a user, uses the natural language of the business, and - on its own - does not tell the whole story. The case method combines two elements: the case itself and the discussion of that case. Youâre like, âWait a minute. A teaching case is a rich narrative in which individuals or groups must make a decision or solve a problem. âHow does that actually happen?â Theyâre using their use case thinking to think it through and to find the gap. â¢ Describe the various sections of a use-case narrative and be able to prepare one. Describe the normal course of events for each use case. The diagram depicts every possible branch of the use case that might be executed in either the completion or abandonment of the goal of the use case. In a use case about how users log into a software system, the normal course of events would state that the user enters a â¦ The use case is represented graphically as the following diagram. Use-Case Specification: Withdraw Cash Date: 01/07/2007 Confidential Sample Bank , 2009 Page 7 e. Continues to videotape the Customer. Itâs drawn as an oval and named with the function. Name and briefly describe your use case. System. UML Use Case Diagrams. â¢ Describe how to construct a use-case model diagram. Now that you have a general understanding of what a use case consists of, we are ready to start creating our use case. Use case descriptions.