Open Property Data Association
Smart Property Data Trust Framework
Become a member Join a working group

    Council sessions

    The OPDA ontology was designed through a series of expert-persona council sessions — adversarial design reviews where named modelling personas (Allemang–Hendler, Cagle, Guizzardi, Gandon, Kendall–Davis, and others) debate each decision. This page surfaces the full corpus: every session record, the per-persona verdict folders that back them, the early scope-checks, and the cross-session adoption ledger. Each entry opens in the resource viewer; records render as markdown, folders as a browsable listing.

    What's here

    50 session records · 12 session verdict folders · 3 scope-check entries · 261 markdown documents across 39 folders in total. The decisions ratified here are the canonical source for the ODR corpus and the published ontology decision provenance.

    Sessions

    Numbered design sessions, in order. The record link is the session writeup; the verdicts link (when present) opens the folder of per-persona verdict documents that fed into it.

    Session Record Verdicts
    session-001-pdtf-schema-to-ontology session-001-pdtf-schema-to-ontology.md —
    session-002-vocabulary-catalogue session-002-vocabulary-catalogue.md 5 verdicts ↗
    session-003-pdtf-ontology-programme session-003-pdtf-ontology-programme.md —
    session-003b-namespace-wg-decision session-003b-namespace-wg-decision.md —
    session-003c-wg-housekeeping-decisions session-003c-wg-housekeeping-decisions.md —
    session-004-pdtf-ontology-foundation session-004-pdtf-ontology-foundation.md 6 verdicts ↗
    session-005-property-land-identity-crux session-005-property-land-identity-crux.md 6 verdicts ↗
    session-006-agents-and-roles session-006-agents-and-roles.md 6 verdicts ↗
    session-007-transactions-and-lifecycle session-007-transactions-and-lifecycle.md 5 verdicts ↗
    session-008-property-descriptive-attributes session-008-property-descriptive-attributes.md —
    session-009-claims-evidence-provenance session-009-claims-evidence-provenance.md 4 verdicts ↗
    session-010-overlay-profile-mechanism session-010-overlay-profile-mechanism.md 4 verdicts ↗
    session-011-enumeration-vocabularies session-011-enumeration-vocabularies.md 4 verdicts ↗
    session-012-data-governance-layer session-012-data-governance-layer.md 5 verdicts ↗
    session-013-shacl-validation-and-severity session-013-shacl-validation-and-severity.md 4 verdicts ↗
    session-phase-3.5-audit-cross-vocabulary-mapping session-phase-3.5-audit-cross-vocabulary-mapping.md —
    session-015-address-and-geography session-015-address-and-geography.md 2 verdicts ↗
    session-019-bounded-context-representation session-019-bounded-context-representation.md —
    session-020-bounded-context-scheme-and-mapping session-020-bounded-context-scheme-and-mapping.md —
    session-021-bounded-context-implementation-plan session-021-bounded-context-implementation-plan.md —
    session-022-form-shacl-profile-convention session-022-form-shacl-profile-convention.md —
    session-023-descriptive-layer-import-strategy session-023-descriptive-layer-import-strategy.md —
    session-024-authority-retrieved-artefacts session-024-authority-retrieved-artefacts.md —
    session-025-ufo-axis-submodules session-025-ufo-axis-submodules.md —
    session-026-building-room-promotion session-026-building-room-promotion.md —
    session-027-fixtures-inclusion-mode session-027-fixtures-inclusion-mode.md —
    session-028-category-g-walk-review session-028-category-g-walk-review.md —
    session-029-r2-ufo-axis-load-bearing session-029-r2-ufo-axis-load-bearing.md —
    session-030-room-building-modelling session-030-room-building-modelling.md —
    session-032-status-scheme-grain session-032-status-scheme-grain.md —
    session-033-governance-class-vocab session-033-governance-class-vocab.md —
    session-034-overlay-leaf-enumeration-discipline session-034-overlay-leaf-enumeration-discipline.md —
    session-035-evidence-alias-retirement-and-faceted-typing session-035-evidence-alias-retirement-and-faceted-typing.md —
    session-036-classification-over-inheritance session-036-classification-over-inheritance.md —
    session-037-url-scheme session-037-url-scheme.md —
    session-038-ontology-reference-document-outline session-038-ontology-reference-document-outline.md —
    session-039-entailment-regime-and-epc-modelling session-039-entailment-regime-and-epc-modelling.md —
    session-040-foundational-ontology-choice session-040-foundational-ontology-choice.md —
    session-041-ufocategory-upper-ontology-representation session-041-ufocategory-upper-ontology-representation.md —
    session-042-ontoclean-meta-property-markup session-042-ontoclean-meta-property-markup.md —
    session-043-transaction-phase-and-ufocategory-dereferenceability session-043-transaction-phase-and-ufocategory-dereferenceability.md —
    session-044-foundational-ontology-validation session-044-foundational-ontology-validation.md —
    session-045-graph-observations-bridge-layers-mass session-045-graph-observations-bridge-layers-mass.md —
    session-046-currency-peril-range-and-scheme-binding session-046-currency-peril-range-and-scheme-binding.md —
    session-047-relationship-layer-object-properties session-047-relationship-layer-object-properties.md —
    session-048-owl-documentary-domain-range-r2-set session-048-owl-documentary-domain-range-r2-set.md —
    session-049-single-canonical-ufo-typing-axis session-049-single-canonical-ufo-typing-axis.md —
    session-050-adopt-semantic-modelling-owl-coverage session-050-adopt-semantic-modelling-owl-coverage.md —
    session-051-relationship-residue-completion session-051-relationship-residue-completion.md —
    session-a9-gandon-guizzardi-methodology-gap session-a9-gandon-guizzardi-methodology-gap.md 3 verdicts ↗

    Scope checks

    Programme-level scope reviews that bracketed the session series — what to model, and how the council itself should run.

    Scope check Record Verdicts
    scope-check-1-programme scope-check-1-programme.md —
    scope-check-2-hive-vs-swarm scope-check-2-hive-vs-swarm.md 4 verdicts ↗
    scope-check-programme — 6 verdicts ↗

    Cross-session & working

    The cross-session adoption ledger and the working scratch folder of in-progress verdicts.

    Entry Type Size
    adoption.md .md 86.0 KB
    working/ folder

    Comments

    Loading comments…