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

    Concepts and architecture

    Start here when the question is why the ontology is shaped as it is rather than where to find one term. This category explains identity, classification and dependence; the separation of class, validation and annotation graphs; the modelling lenses used to test those choices; and the reader-specific views generated from the same corpus.

    schema-derived draft

    These pages explain the architecture of a draft ontology extracted from PDTF schema. They are not an approved SPDTF conceptual model. SPDTF domain meaning remains subject to its evidence-up working-group and governance process.

    Questions this category answers

    QuestionArchitectural concern
    What kind of thing is this?UFO-informed categories and the distinction between Kinds, Roles, Relators, Qualities and information objects.
    What makes it the same thing over time?Identity criteria, with identifiers such as UPRN treated as contingent qualities rather than identity itself.
    What is inferred and what is checked?Three-graph separation and the governed boundary between open-world semantics, SHACL validation and annotations.
    How should I read the model?Concept, logical, deployment, ontology and relational views for different audiences and tasks.

    Explore the architecture

    Core commitments

    Foundations and architecture

    Read the three-graph separation, the UFO and OntoClean frame, the dct:source contract that grounds each term, and the inference-versus-validation boundary recorded in ODR-0004.

    Open page     Identity doctrine

    Identity and classification

    Distinguish Property, LegalEstate and RegisteredTitle as three Kinds with three identity criteria; UPRN is a contingent Quality, never the identity criterion itself (ODR-0005).

    Open page     Limits of the lens

    Foundational ontology critique

    See exactly how UFO and OntoClean inform the model, where their use stops, and which claims the corpus does not make.

    Open page     Compared approaches

    Modelling frameworks

    Review the upper-ontology and modelling frameworks assessed for the extracted corpus and the recorded rationale for their bounded use.

    Open page     Visual exploration

    Interactive graph

    Inspect the OWL class backbone as a filterable node-link graph, switch on the SKOS layer, filter by module, focus a neighbourhood and open detailed resource pages (ADR-0043).

    Open page     Reader views

    Model views by audience

    Choose a concept, logical, deployment, physical-ontology or relational presentation of the same underlying semantic corpus.

    Open page

    One corpus, several views

    The conceptual pages, interactive graph and model tiers are presentations of one committed corpus; they do not create parallel specifications. Use the conceptual pages to interpret modelling commitments, then use the term and model-resource indexes for exact identifiers and the validation and example pages for executable constraints and diagnostic cases.

    Comments

    Loading comments…