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57 lines
1.4 KiB
Markdown
57 lines
1.4 KiB
Markdown
---
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title: "what-are-uml-diagrams"
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aliases:
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tags:
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- info201
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---
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A standard set of model constructs and notation defined by the object management group
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specify what not how
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- activity diagrams
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- high level for business prcesses workflows
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- low level for dtailed business logicP
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- advantages
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- describe workflows
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- specify relative processing rder of activites
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- simple
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- can be shown to stakeholders for checking and confirmation
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enables implementation-independent specification of:
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- user/system interactions
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- partitioning of responsibility
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- integration with larger or existing systems
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- data flow and dependency
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- order of operations (algorithms and processes)
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- concurrent operations
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## 1 why is is useful
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- helps develop efficient effective correct designs
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- better communication with project stakeholders
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- gives a big picture view of the project system
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- independent of specific programming languages or development processes
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- de facto standard for modelling OO systems
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## 2 what it is not
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- visual modelling software
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- a programming languages
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- a software development process, method, or methodology
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## 3 Types of diagram
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### 3.1 structural
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[](https://i.imgur.com/zS15EFj.png#invert)
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### 3.2 behavioural
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[](https://i.imgur.com/4lj2QIt.png#invert)
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### 3.3 Linked diagrams
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each digram type models a dfiferenct aspect of the system
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many of the diagrams link to each other
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- e.g., use case, sequence, activity
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- e.g., object, communication
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e.g.,
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