Get Use-case Model: Writing

A use case name is often short and you can use the description to elaborate more, often using paragraph form. For example:An e-commerce user selects an item they want to buy, so they place it in their online cart intending to place the order and pay electronically.

Instead of focusing on technical detail, it's a cause-and-effect description of different inputs. For example, if you run a code debugging platform, your business use case explains how users enter their code and receive error notices.

6 steps for developing a use case Determine the user. The first step is to determine the user. ... Identify the user's goals. Choose one type of user and identify their goals. ... Define the process. ... Consider alternative outcomes. ... Compare use cases and identify commonalities. ... Repeat for all users.

A use case is a concept used in software development, product design, and other fields to describe how a system can be used to achieve specific goals or tasks. It outlines the interactions between users or actors and the system to achieve a specific outcome.

The four main components of a use case diagram are actors, systems, relationships, and use cases. Actors are any human or external system that interacts with the system. Systems are the main components of the system being modeled. Relationships show how the actors and systems interact with each other.

A use case scenario might look something like this: A user goes to the website and browses through the product catalog. The user attempts to add a product to their shopping cart, but discovers the product is out of stock. The user contacts customer service to inquire about the product.

Consider the example of a person interacting with a social networking site. The various ways in which he or she interacts, and the results derived from that interaction, could be captured in the form of a use case analysis. The person, or other external system, that's interacting is also referred to as an actor.

For example, a system use case might be "return book when overdue". It would then describe the interactions of the various actors and the system to carry out the end-to-end process.