025-squirrel/docs/sqa/traceability-matrix.md

Traceability Matrix

Metadata

Key	Value
ID	TM-001
CrossReference	BC-001

Version History

Date	Status	Author	Reviewer	Change	Commit
2026-10-13	Accepted	Jens Tirsvad Nielsen	AI as stand-in for S01	Initial version	f1b3c03

---

Purpose

Tracks backward/forward links between artifact instances so that the Business Case's cross-artifact traceability success criterion is measurable. A row is added or updated whenever an artifact instance is created or reviewed.

Traceability Table

Artifact Instance	Type	Language	Domain	Upstream (Backward Link)	Downstream (Forward Link)	Last Reviewed (RC-ID)
BC-001	Business Case	en	it	-	SA-001, PP-001, MIL-001, MIL-002, MIL-003, MIL-004	RC-001, RC-019, RC-026
SA-001	Stakeholder Analysis	en	it	BC-001	PP-001	RC-002
PP-001	Project Plan	en	it	BC-001, SA-001	MIL-001, MIL-002, MIL-003, MIL-004	- (no checklist; accepted by S01 in chat)
MIL-001	Milestone	en	it	BC-001, PP-001	-	RC-003, RC-020, RC-028
MIL-002	Milestone	en	it	BC-001, PP-001, MIL-001	-	RC-004, RC-021
MIL-003	Milestone	en	it	BC-001, PP-001, MIL-002	-	RC-005, RC-022
MIL-004	Milestone	en	it	BC-001, PP-001, MIL-003	-	RC-006, RC-023, RC-027
DICT-001	Domain Dictionary	en	it	BC-001, SA-001	-	RC-007, RC-018
UCD-001	Use Case Diagram	en	it	SA-001, BC-001	US-001, UC-001	RC-011
US-001	User Story	en	it	UCD-001, BC-001, MIL-002	UC-001	RC-012
UC-001	Use Case	en	it	UCD-001, US-001, SA-001	SSD-001, DM-001	RC-013
SSD-001	System Sequence Diagram	en	it	UC-001	-	RC-014
DM-001	Domain Model	en	it	UC-001, DICT-001	DM-002	RC-015
DM-002	Domain Model	en	it	DM-001, DICT-001	-	RC-016
ADR-0001	Architecture Decision Record	-	-	BC-001, SA-001, MIL-002	src/squirrel/census.py	RC-017
src/squirrel/census.py, cli.py, __main__.py, tests/	Python Source Code	-	-	UC-001, SSD-001, ADR-0001	-	RC-024
src/squirrel/constants.py, tests/test_constants.py	Python Source Code	-	-	MIL-001	-	RC-008
.gitea/workflows/ci.yml	CI Workflow	-	-	MIL-001	-	RC-009, RC-010, RC-025

Coverage Notes

• - in Upstream means foundational; in Downstream, nothing is built on it yet; in Last Reviewed, no RC-* exists yet.
• No instance of OC, SD, DCD, ERD or KPI; the project creates none (see RC-018).

---