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:
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