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content/notes/i201-practice.md Normal file
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---
title: "i201-practice"
aliases:
tags:
---
# Section A
## 1
a) sequence diagram - to document a *sequence* of particpant interactions required to carry out a use case
b)
1 - Actor
2 - Activation Bar
3 - message

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content/notes/info-201.md
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@ -9,7 +9,7 @@ tags:
--- ---
- [coursework tiddlywiki](https://isgb.otago.ac.nz/infosci/INFO201/labs_release/raw/master/output/info201_labs.html#) - [coursework tiddlywiki](https://isgb.otago.ac.nz/infosci/INFO201/labs_release/raw/master/output/info201_labs.html#)
- [assignments tiddlywiki](https://isgb.otago.ac.nz/info201/shared/assignments_release/raw/master/output/info201_assignments.html)W - [assignments tiddlywiki](https://isgb.otago.ac.nz/info201/shared/assignments_release/raw/master/output/info201_assignments.html)
# Outline # Outline
- [version control system](notes/version-control-systems.md) - [version control system](notes/version-control-systems.md)

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content/notes/photos.md
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---
title: "photos"
aliases:
tags:
---
![](https://i.imgur.com/iMHFpvw.png)
![](https://i.imgur.com/jPZwDjk.png)
![](https://i.imgur.com/9IaB7gV.png)
![](https://i.imgur.com/Jfaz4Yb.png)
![](https://i.imgur.com/tPGOoEq.png)
![](https://i.imgur.com/f6waMj3.png)

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content/notes/sequence-diagrams.md
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@ -29,7 +29,7 @@ These diagrams are:
- back and forth process - back and forth process
General overview example: [annotated example](https://i.imgur.com/1myG3rU.png) General overview example: ![annotated example](https://i.imgur.com/1myG3rU.png)
- time goes from top to bottom - time goes from top to bottom
- however no specific time units - however no specific time units
- can have actors as participants - can have actors as participants
@ -62,25 +62,25 @@ relevant slide:
# Messages # Messages
[example](https://i.imgur.com/XedVmng.png) ![example](https://i.imgur.com/XedVmng.png)
- direction - direction
- <- or -> - <- or ->
- easier to under stand if most messages are -> - easier to under stand if most messages are ->
- however this is not always possible - however this is not always possible
- same object used by multiple other objects - same object used by multiple other objects
- an object calls back to the object that called it - an object calls back to the object that called it
- can be conditions (guards) [example](https://i.imgur.com/yWTcD1F.png) - can be conditions (guards) ![example](https://i.imgur.com/yWTcD1F.png)
- only sent if condition is true - only sent if condition is true
- able to approximate if-then-else using multiple branches with exclusive conditions - able to approximate if-then-else using multiple branches with exclusive conditions
- this is better done in activity diagram - this is better done in activity diagram
- looping messages [example](https://i.imgur.com/tcFZ4bb.png) - looping messages ![example](https://i.imgur.com/tcFZ4bb.png)
- an asterisk idicated looping - an asterisk idicated looping
- repeat message until condition id false - repeat message until condition id false
- send messge to each object in a collection - send messge to each object in a collection
- may also be better in activity diagram - may also be better in activity diagram
# Interaction frames (UML 2.x) # Interaction frames (UML 2.x)
[example](https://i.imgur.com/V1Jhnd2.png) ![example](https://i.imgur.com/V1Jhnd2.png)
- loop frame - loop frame
- any kind of loop - any kind of loop
- replaces * notation - replaces * notation
@ -141,10 +141,10 @@ note navigability of domain
sequence diagram sequence diagram
- [part 1](https://i.imgur.com/PJJBZav.png) - ![part 1](https://i.imgur.com/PJJBZav.png)
- [part 2](https://i.imgur.com/M3jRM8g.png) - ![part 2](https://i.imgur.com/M3jRM8g.png)
- [part 3](https://i.imgur.com/PhCYWsy.png) - ![part 3](https://i.imgur.com/PhCYWsy.png)
- [part 4](https://i.imgur.com/L0h4nb8.png) - ![part 4](https://i.imgur.com/L0h4nb8.png)