ODR Corpus
The Ontology Decision Records (ODRs) are the Linked Data Council's deliberation audit trail — the why behind every significant ontology-modelling decision in the OPDA programme. Each record captures the options considered, the chosen outcome, the voting rationale, and the downstream consequences.
18 records in total — every one is a live page rendered from its markdown. Records marked ✓ diagrams have been enriched with illustrative Mermaid diagrams per ADR-0024; the rest render as text until their enrichment wave lands.
| No. | Title | Kind | Status | Page |
|---|---|---|---|---|
0001 | Linked Data Council: Review Methodology | methodology | accepted | view · ✓ diagrams |
0002 | Ontology Languages and Vocabularies Adopted | architecture | accepted | view · ✓ diagrams |
0003 | PDTF to Ontology: Programme and Work Breakdown | programme | accepted | view · ✓ diagrams |
0004 | PDTF Ontology Foundation | architecture | accepted | view · ✓ diagrams |
0005 | Property & Land: The Identity Crux | pattern | accepted | view · ✓ diagrams |
0006 | Agents & Roles | pattern | accepted | view · ✓ diagrams |
0007 | Transactions & Lifecycle | pattern | accepted | view · ✓ diagrams |
0008 | Property Descriptive Attributes | pattern | proposed | view · ✓ diagrams |
0009 | Claims, Evidence & Provenance | pattern | accepted | view · ✓ diagrams |
0010 | Overlay Profile Mechanism | architecture | accepted | view · ✓ diagrams |
0011 | Enumeration Vocabularies | architecture | accepted | view · ✓ diagrams |
0012 | Data-Governance Layer | architecture | accepted | view · ✓ diagrams |
0013 | SHACL Validation & Severity | architecture | accepted | view · ✓ diagrams |
0014 | Vocabulary Catalogue Amendments | architecture | accepted | view · ✓ diagrams |
0015 | Address & Geography | pattern | proposed | view · ✓ diagrams |
0016 | W3C Verifiable Credentials / DID Compatibility Layer | architecture | proposed | view · ✓ diagrams |
0017 | SHACL-AF Non-Blocking Data-Quality Rules | pattern | accepted | view · ✓ diagrams |
0018 | DPV Class-Level Co-Annotation Pattern | pattern | accepted | view · ✓ diagrams |
About ODRs
An ODR is one of two kinds of decision:
-
An ontological commitment (
kind: patternormapping) — a declaration about what kinds of entities the domain contains, what their identity criteria are, what Roles or Phases they pass through. -
An artefact-engineering decision (
kind: architecture,methodology, orprogramme) — a decision about how to structure, name, govern, sequence, or process the artefacts that encode the ontology.
Each accepted ODR is frozen: a later decision supersedes it with a new ODR. Illustrative diagrams may be added to the markdown as non-substantive enrichment (they visualise the existing decision, never change it) per ADR-0024; substantive change always requires a new ODR.
Methodology
All ODRs are ratified by the Linked Data Council — a simulated panel of 9 named linked-data and ontology authorities whose published positions are used to evaluate modelling decisions from multiple perspectives. See ODR-0001 for the full methodology.
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