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2. Use case diagram - Wikipedia

   en.wikipedia.org/wiki/Use_case_diagram

   A use case diagram[1] is a graphical depiction of a user's possible interactions with a system. A use case diagram shows various use cases and different types of users the system has and will often be accompanied by other types of diagrams as well. The use cases are represented by either circles or ellipses. The actors are often shown as stick ...

3. Use case - Wikipedia

   en.wikipedia.org/wiki/Use_case

   Use case analysis usually starts by drawing use case diagrams. For agile development, a requirement model of many UML diagrams depicting use cases plus some textual descriptions, notes, or use case briefs would be very lightweight and just enough for small or easy project use. As good complements to use case texts, the visual diagram ...

4. Use-case analysis - Wikipedia

   en.wikipedia.org/wiki/Use-case_analysis

   Use case analysis is a technique used to identify the requirements of a system (normally associated with software/process design) and the information used to both define processes used and classes (which are a collection of actors and processes) which will be used both in the use case diagram and the overall use case in the development or redesign of a software system or program.

5. Unified Modeling Language - Wikipedia

   en.wikipedia.org/wiki/Unified_Modeling_Language

   A diagram is a partial graphic representation of a system's model. The set of diagrams need not completely cover the model and deleting a diagram does not change the model. The model may also contain documentation that drives the model elements and diagrams (such as written use cases). UML diagrams represent two different views of a system ...

6. Applications of UML - Wikipedia

   en.wikipedia.org/wiki/Applications_of_UML

   UML (Unified Modeling Language) is a modeling language used by software developers. [1] UML can be used to develop diagrams and provide users (programmers) with ready-to-use, expressive modeling examples. [note 1] Some UML tools generate program language code from UML. [2] UML can be used for modeling a system independent of a platform language.

7. UML state machine - Wikipedia

   en.wikipedia.org/wiki/UML_state_machine

   UML state machine is an object-based variant of Harel statechart, [2] adapted and extended by UML. [1][3] The goal of UML state machines is to overcome the main limitations of traditional finite-state machines while retaining their main benefits. UML statecharts introduce the new concepts of hierarchically nested states and orthogonal regions ...