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70 lines
1.6 KiB
Markdown
70 lines
1.6 KiB
Markdown
---
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title: "activity-diagrams"
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aliases:
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tags:
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- info201
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---
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[](https://i.imgur.com/zpwJJ5d.png)
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[](https://i.imgur.com/PKHcpMx.png)
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### 3.4 Activites and transitions
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[](https://i.imgur.com/1G14Ntn.png)
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- activities
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- take place over some pariod of time
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- linked by transitions (arrows)
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- only one starting point potentaily many ending conditions
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- Transitions
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- have guard conditions that must be satisfied before the transition can occur
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### 3.5 Decision points
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- represent conditional branching
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- two or more alternative transitions depending on condition
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- every transiiton exiting the decision point must have a guard condition
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[](https://i.imgur.com/KCufkgX.png)
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### 3.6 Synchonisation bars
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- represents two or more activites running in parallel
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- transitions can be split into mutiple paths and recombined later
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- if a workflow is split then it must be recombined on the same diagram
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[](https://i.imgur.com/IVfP7vt.png)
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### 3.7 swim lanes
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- same as BPMN
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- show who is responsible for a process
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- can represent
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- business organisations
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- depts
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- people (actors)
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- can simplify processes
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[](https://i.imgur.com/cRiZjtE.png)
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### 3.8 relationships to use cases
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- use case diagrams show the high level interactions between actors and cases
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- high level activity diagrams show the sequence of use cases within a workflow
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[](https://i.imgur.com/3b9f2va.png)
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#### 3.8.1 example
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[](https://i.imgur.com/dKHjIdu.png)
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[](https://i.imgur.com/yCAjqkZ.png)
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[](https://i.imgur.com/RifaVaq.png)
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### 3.9 Example producing a book
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[](https://i.imgur.com/X5aFAt2.png)
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[](https://i.imgur.com/AKVAshk.png)
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