USE CASES

Systems Engineering Glossary

Systems EngineeringSystems EngineeringRequirements EngineeringUser Requirements Document — Use Cases

 

 

 

 

 

 

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Information on Use Cases

Use cases and user scenarios are very useful because users often find it easiest to describe their view of the system in terms of examples and illustrations of how it might be used and how users will interact with it. Use cases and scenarios are therefore often provided in the form of a narrative.
     Use cases provide good framework within which to elicit requirements, as well as serving throughout the project as upper-level descriptions of the required functionality.
     Use cases and scenarios also perform a very important function of defining the purpose of the system, which is useful during acceptance testing to ensure that the delivered system is 'fit-for-purpose'.
     It is important that the use cases and scenarios capture the exception conditions as well as the normal operational conditions. Use cases are normally articulated in the User Requirements Document.


Other topics in our resources on Systems Engineering related to Use Cases include: 
 
  • Need Statement
  • Goals And Objectives
  • Operational Environment
  • Mission Profiles
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