025-squirrel/docs/dictionary.md

Domain Dictionary (PO and IT terms)

Metadata

Key	Value
ID	DICT-001
CrossReference	BC-001, SA-001, DM-002
Language	en
Domain	it

Version History

Date	Status	Author	Reviewer	Change	Commit
2026-10-13	Proposed	Jens Tirsvad Nielsen	AI as stand-in for S01	Initial version	f1b3c03
2026-10-13	Accepted	Jens Tirsvad Nielsen	AI as stand-in for S01	CrossReference: added DM-002	pending

---

Purpose and Scope

Maps each Product Owner (PO) term of the squirrel census project to its professional IT term. PO language: English (en), domain it. It covers the terms of the Business Case, Stakeholder Analysis, milestones, user story, use case and Domain Model.

Dictionary

PO term	Language	IT term	Definition	Used as PO term in	Used as IT term in
Census file	en	source file	The file with the 2018 squirrel census that the participant supplies to the program.	BC, SA, MIL, user story (US), use case (UC), domain model (DM)	system sequence diagram (SSD), source code
Squirrel sighting	en	sighting row	One recorded observation of one squirrel in the census file.	BC, MIL, US, UC, DM	SSD, source code
Fur colour	en	fur_color	The primary fur colour of a squirrel: Gray, Cinnamon or Black.	BC, SA, MIL, US, UC, DM	SSD, source code
Colour count	en	color_count	The number of squirrel sightings with one fur colour.	BC, MIL, US, UC, DM	SSD, source code
Summary	en	summary table	The table of fur colours and their counts.	BC, MIL, US, UC, DM	SSD, source code
Summary file	en	output file	The file the summary is written to.	BC, MIL, US, UC, DM	SSD, source code
Participant	en	command line user	The course participant who runs the program on the census file.	BC, SA, US, UC	SSD

Rules

• The Domain Model, use cases and user stories use the PO term; the Operation Contract, Sequence Diagram, Design Class Diagram, ERD and source code use the IT term.
• One IT term per PO term and one PO term per IT term; no synonyms.
• A new concept in the Domain Model gets a row in the same change.

---