Date: Fri, 29 Mar 2024 06:18:37 +0100 (CET)
Message-ID: <1422854780.1481.1711689517792@nm-docs>
Subject: Exported From Confluence
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Use Cases are a means of specifying the required usages of a sys=
tem. Typically, they are used to capture the requirements of a system, that=
is, what a system is supposed to do.
In the following figure you can see a fragment of the Library System. Th=
e Use Case Register Return is associated to the Actor Lib=
rarian, which means that this Actor initiates that Use Case.
=
span>
Behavior of a Use Case can be specified by an Activity, State Machine, o=
r Sequence. It can also be described by a textual description - a Use Case =
scenario that can be depicted in an Activity diagram.
A Use Case can be specified by changing its property values in the Use C=
ase Specification win=
dow. Each property is described in the description area on this window.=
Use Case relationships
A Use Case can be associated with an Actor to specify that the Actor ini=
tiates the associated Use Case.
A Use Case can be related to other Use Cases by
- Generalization
- Include
- Extend
Use Case shape with rake icon=
h3>
The rake icon is displayed on the shape, if th=
e Use Case is realized by other behavior diagrams, such as Use Case, Activi=
ty, State Machine, or Sequence. To hide the rake icon you need to set the <=
strong>Show Rake Icon property value to false in the Symbol Property dialog.
Use Cas=
e Actors
An Actor can be related to the Use Case by Association.
You can see the Actors that are related to the selected Use Case in Specification =
window of that Use Case, the Actor=
s property group. This group displays a list of Actors that are dire=
ctly (through the Association relationship) or indirectly (through the Exte=
nd, Include, or Generalization relationships) connected to the selected Use=
Case.
Related pages
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