Use cases describe in more detail the key elements of the requirements definition. They explain the process by which the system will meet the functional requirements defined in the previous chapter. The use cases are then used to build a process model, which defines the business processes in a more formal manner.
Elements of a Use Case
Building Use Cases
Applying the Concepts at Tune Source
Identifying the Major Use Cases
Identifying the Major Steps for Each Use Case
Identifying the Elements within Steps
Confirming the Use Case
The previous chapter discussed the process of requirements determination resulting in the requirements definition. The requirements definition defines what the system is to do. In this chapter, we discuss how these requirements are further refined into a set of use cases that provide more detail on the processes by which the system is to meet these requirements and the data the system needs to capture and store. Generally, each use case describes one or more system requirements. Once the use cases have been developed, the next steps are to use the requirements definition and the use cases to create even more detailed descriptions of the processes ...