Home A - Z
Page Index

An Otter Wiki

Blame

3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
1 
<!-- Generated from applied-computing-au vic/unit3-4/sat/C02-2026/C02-essential-terms.md by port-reference-godot-to-wiki.py — do not hand-edit; re-run the port. -->
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
2
> **DRAFT** — under teacher review.
3
4
# Essential Terms — C02
5
1abe81 lisa 2026-04-30 18:17:38
School name → 'The Hamilton and Alexandra College' across all wiki pages Sweep rename of the standard subtitle line on every wiki page (sd/, hub, resources). 25 files affected.
6
The Hamilton and Alexandra College · Year 12 · 2026
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
7
8
A glossary of every term you need to recognise and use correctly across C02. Click a term to expand its definition. Use this as a vocabulary self-check before your C2-1 (Poster Peer-Assessment) and C2-2 (Hand-Drawn Diagrams) validations — if you can't define a term in your own words, you can't defend it under questioning.
9
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
10
```mermaid
11
flowchart TD
12
R["C02 vocabulary<br/>26 terms"]
13
R --> G0["Data collection<br/>9 terms"]
14
R --> G1["Context diagrams and DFDs<br/>7 terms"]
15
R --> G2["Use case diagrams (UML)<br/>10 terms"]
16
```
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
17
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
18
*Where the C02 vocabulary sits, and how much of it is in each group — the 3 sections below follow the same order. Revise the heavy groups first.*
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
19
20
---
21
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
22
## Data collection
d8d977 lisa 2026-04-28 16:26:33
Essential Terms: split glossary into Data Collection + Analytical Tools Two H2 sections so students can study by focus area (C2-1 data collection vs C2-2 diagrams). Same folded-block format throughout. 9 terms in Data Collection, 17 in Analytical Tools.
23
24
>| ### Close-ended questions
25
>| Questions that can be answered with a finite set of responses
26
27
>| ### Data
28
>| Raw, unprocessed facts and figures
29
30
>| ### Interview
31
>| A face-to-face meeting between people for consultative purposes
32
33
>| ### Observation
34
>| A method of data collection that involves physically observing how a system operates and how it is used
35
36
>| ### Open-ended questions
37
>| Questions where the number of potential answers is infinite
38
39
>| ### Qualitative data
40
>| Data that consists of descriptive details, usually gathered via surveys or interviews
41
42
>| ### Quantitative data
43
>| Data that can be easily processed in a statistical manner, usually composed of definite numbers
44
45
>| ### Report
46
>| A written document providing a summary or finding in relation to the context or system being analysed
47
48
>| ### Survey
49
>| A set of questions that ask for a response to be selected from a list of alternatives
50
51
---
52
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
53
## Context diagrams and DFDs
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
54
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
55
>| ### Context diagram
56
>| A visualisation of a system in its entirety that indicates the data that is passed into and out of the system
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
57
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
58
>| ### Data flow
59
>| The movement of a piece or collection of data within an information system, as shown in context diagrams and data flow diagrams (DFDs)
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
60
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
61
>| ### Data flow diagram (DFD)
62
>| A graphical visualisation of the flow of information within a system, including data provided by external entities
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
63
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
64
>| ### Data store
65
>| A representation of a collection of data that is stored in some way within a system
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
66
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
67
>| ### Entity
68
>| The users or external systems that interact with the system being created
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
69
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
70
>| ### Process (context diagram)
71
>| An abstract representation of the whole system being created
72
73
>| ### Process (data flow diagram)
74
>| An abstract representation of a function within a system
75
76
---
77
78
## Use case diagrams (UML)
79
80
>| ### Actor
81
>| An entity that can interact with the software solution as shown in a use case diagram
82
83
>| ### Association
84
>| A relationship between two elements in a use case diagram
85
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
86
>| ### Extend
87
>| A relationship between use cases where one use case has optional or additional functionality, which is represented in a use case diagram as a second use case
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
88
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
89
>| ### Generalisation
90
>| A parent-child relationship between two elements in a use case diagram
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
91
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
92
>| ### Include
93
>| A relationship between use cases where one use case is tied to, or relies upon, the functionality contained within another use case
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
94
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
95
>| ### Relationship
96
>| The connections between elements within a use case diagram
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
97
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
98
>| ### System boundary
99
>| A rectangle around relevant use cases that indicates the use cases that are within the scope of the solution
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
100
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
101
>| ### Unified Modeling Language (UML)
102
>| A general-purpose visual modelling language
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
103
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
104
>| ### Use case
105
>| A representation of the transactions or functions a user (actor) can complete in a system, as shown in a use case diagram
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
106
f48b63 lisa 2026-04-27 20:03:58
Essential Terms: switch Obsidian callouts to OtterWiki folded blocks Obsidian's '> [!note]- Term' syntax was rendering as plain blockquotes on OtterWiki. Converted all 26 entries to '>| ### Term' folded-block syntax (per OtterWiki syntax guide), so each term is a click-to-expand summary with the definition revealed below.
107
>| ### Use case diagram (UCD)
108
>| A method of describing how a user interacts with a system, using Unified Modeling Language (UML)
20e3bf lisa 2026-04-27 20:00:52
Add C02 Essential Terms glossary Verbatim from C02-essential-terms.md (25 terms covering data collection, context/data-flow/use-case diagrams, qual/quant). House-style header + topics index + see-also footer added.
109
110
---
111
112
## See also
113
3a78e1 lisa 2026-08-29 17:10:44
Essential Terms: interactive pages for C01-C10 One mechanism in the shared port script builds all ten glossaries from CXX-2026/CXX-essential-terms.md. Obsidian's [!note]- callouts do not render in OtterWiki, so every page is rebuilt to the C02 click-to-reveal shape (>| ### Term / >| definition): C01 and C03-C08 are new, C09 converts from the non-rendering form, C02 and C10 are regenerated. 258 terms, definitions verbatim from source, sorted into the groups named by each source's own Topics list; the port asserts the grouping covers every term exactly once. Each page opens with a compact vocabulary map and closes on a See also. Seven criterion home pages gain a Foundations link. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RxqgYbTNNYrPNuko6xfbKs
114
- [C02 home page](/sd/C02/C02-home) — everything else for this criterion
115
- [Context Diagram](/sd/C02/Context%20Diagram) — the highest-level view of your system
116
- [Context Diagram vs Data Flow Diagram](/sd/C02/Context%20Diagram%20vs%20Data%20Flow%20Diagram) — what changes between Level 0 and Level 1
117
- [What Is an Entity](/sd/C02/What%20Is%20an%20Entity) — entities aren't only people
118
- [Excalidraw Diagram Starters](/sd/C02/Excalidraw%20Diagram%20Starters) — pre-framed canvases for rehearsing all three diagrams