What is use case

A use case refers to a specific scenario or situation that describes how a system, product, or service is used to achieve a particular goal or meet a user’s needs. It outlines the steps, interactions, and outcomes involved in a particular interaction or process. Use cases are commonly used in software development, business analysis, and project management to understand user requirements and design effective solutions. Here are some key points about use cases:
1. Description: A use case provides a detailed description of a specific interaction between a user or actor and a system. It describes the steps taken, the inputs and outputs, and the expected outcomes.
2. Goal-oriented: Each use case focuses on achieving a specific goal or objective. It captures the actions that a user performs to accomplish a task or solve a problem using the system or product.
3. Actors: Actors are the individuals or systems interacting with the system or product being described in the use case. They can be users, customers, administrators, or other external systems.
4. Steps and Interactions: Use cases outline the sequence of steps involved in completing a specific task or achieving a specific outcome. They include interactions between the user and the system, such as inputting data, making selections, and receiving feedback.
5. Exception Handling: Use cases also consider exceptional scenarios or error conditions that may arise during the interaction. They describe how the system should respond and handle such exceptions.
6. Design and Development: Use cases serve as a foundation for designing and developing software systems. They help in understanding user requirements, identifying system functionalities, and defining the scope of the system.
7. Communication and Collaboration: Use cases facilitate effective communication and collaboration between stakeholders, including developers, designers, business analysts, and end-users. They provide a common understanding of system behavior and help ensure that the solution meets user needs.
8. Testing and Validation: Use cases are used as a basis for testing and validating the system’s functionality. Test cases are derived from use cases to verify that the system performs as expected in various scenarios.
Overall, use cases are valuable tools for understanding user requirements, documenting system behavior, and guiding the design and development process. They enable stakeholders to visualize how a system will be used, identify potential issues or improvements, and ensure that the final solution meets user expectations.