## Turtle — Open Knowledge Format (OKF) Ontology (TBox) ## Canonical IRI: https://linkeddata.uriburner.com/DAV/demos/daas/okf-open-knowledge-format-ontology.ttl ## Generated: 2026-06-15 | Model: Claude Sonnet 4.6 | Env: Claude Code ## Upload target: https://linkeddata.uriburner.com/DAV/demos/daas/okf-open-knowledge-format-ontology.ttl @prefix okf: . @prefix owl: . @prefix rdf: . @prefix rdfs: . @prefix schema: . @prefix xsd: . @prefix dcterms: . @prefix skos: . # ── Self-describing document entity ────────────────────────────────────────── <> a owl:Ontology, schema:CreativeWork ; schema:name "Open Knowledge Format (OKF) Ontology"@en ; schema:description "TBox vocabulary for the Open Knowledge Format (OKF) v0.1 — defines all classes and properties used in OKF instance data. Covers document types, bundle structure, schema constructs, and row-level data record terms."@en ; schema:dateCreated "2026-06-15T00:00:00Z"^^xsd:dateTime ; schema:dateModified "2026-06-15T00:00:00Z"^^xsd:dateTime ; schema:about okf:KnowledgeBundle ; dcterms:license ; owl:versionInfo "0.1"^^xsd:string . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 1: Document Type Classes # ══════════════════════════════════════════════════════════════════════════════ okf:KnowledgeBundle a owl:Class ; rdfs:label "Knowledge Bundle"@en ; rdfs:comment "A collection of typed OKF knowledge documents grouped under an index manifest. The top-level container for portable, interoperable knowledge."@en ; rdfs:isDefinedBy <> . okf:IndexDocument a owl:Class ; rdfs:label "Index Document"@en ; rdfs:comment "An OKF document with type 'index' that serves as a manifest listing all knowledge documents within a bundle or sub-domain."@en ; rdfs:isDefinedBy <> . okf:ConceptDocument a owl:Class ; rdfs:label "Concept Document"@en ; rdfs:comment "An OKF document with type 'concept' that provides narrative definitions, context, and explanations for domain concepts."@en ; rdfs:isDefinedBy <> . okf:DatasetDocument a owl:Class ; rdfs:label "Dataset Document"@en ; rdfs:comment "An OKF document with type 'dataset' that describes a data source, its tables, and inter-table relationships."@en ; rdfs:isDefinedBy <> . okf:TableDocument a owl:Class ; rdfs:label "Table Document"@en ; rdfs:comment "An OKF document with type 'table' that describes a relational table — its columns, primary key, foreign key relationships, and sample queries."@en ; rdfs:isDefinedBy <> . okf:MetricDocument a owl:Class ; rdfs:label "Metric Document"@en ; rdfs:comment "An OKF document with type 'metric' that defines a business metric — its formula, aggregation logic, and source tables."@en ; rdfs:isDefinedBy <> . okf:RunbookDocument a owl:Class ; rdfs:label "Runbook Document"@en ; rdfs:comment "An OKF document with type 'runbook' that contains operational step-by-step procedures."@en ; rdfs:isDefinedBy <> . okf:ColumnDefinition a owl:Class ; rdfs:label "Column Definition"@en ; rdfs:comment "A typed column within an OKF TableDocument, with a name, data type, and optional description."@en ; rdfs:isDefinedBy <> . okf:EnrichmentAgent a owl:Class ; rdfs:label "Enrichment Agent"@en ; rdfs:comment "An AI agent or automated pipeline that reads OKF knowledge bundles and produces derived artefacts — summaries, embeddings, semantic metadata, resolved FK relationships, or RDF triples."@en ; rdfs:isDefinedBy <> . okf:Visualizer a owl:Class ; rdfs:label "Visualizer"@en ; rdfs:comment "A tool that converts OKF bundles into visual representations — e.g., interactive graph views or static HTML reports."@en ; rdfs:isDefinedBy <> . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 2: Row-Level Data Record Classes # ══════════════════════════════════════════════════════════════════════════════ okf:DataRecord a owl:Class ; rdfs:label "Data Record"@en ; rdfs:comment "Superclass for row-level instance data records in OKF table documents."@en ; rdfs:isDefinedBy <> . okf:OrderRecord a owl:Class ; rdfs:subClassOf okf:DataRecord ; rdfs:label "Order Record"@en ; rdfs:comment "A single row in an OKF orders table document."@en ; rdfs:isDefinedBy <> . okf:CustomerRecord a owl:Class ; rdfs:subClassOf okf:DataRecord ; rdfs:label "Customer Record"@en ; rdfs:comment "A single row in an OKF customers table document."@en ; rdfs:isDefinedBy <> . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 3: Bundle & Document Structural Properties # ══════════════════════════════════════════════════════════════════════════════ okf:documentType a owl:DatatypeProperty ; rdfs:label "document type"@en ; rdfs:comment "The producer-defined type string declared in the YAML frontmatter of an OKF document. The only mandatory field in the OKF specification. Examples: 'Index', 'BigQuery Dataset', 'BigQuery Table', 'Metric', 'Concept', 'Runbook'."@en ; rdfs:domain okf:IndexDocument ; rdfs:range xsd:string ; schema:domainIncludes okf:IndexDocument, okf:DatasetDocument, okf:TableDocument, okf:MetricDocument, okf:ConceptDocument, okf:RunbookDocument ; rdfs:isDefinedBy <> . okf:bundleVersion a owl:DatatypeProperty ; rdfs:label "bundle version"@en ; rdfs:comment "The version string of an OKF KnowledgeBundle, corresponding to the OKF specification version used."@en ; rdfs:domain okf:KnowledgeBundle ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:isVendorNeutral a owl:DatatypeProperty ; rdfs:label "is vendor neutral"@en ; rdfs:comment "Asserts that an OKF KnowledgeBundle or specification artifact requires no proprietary vendor accounts, SDKs, or platform lock-in."@en ; rdfs:range xsd:boolean ; rdfs:isDefinedBy <> . okf:requiresSDK a owl:DatatypeProperty ; rdfs:label "requires SDK"@en ; rdfs:comment "Asserts whether an OKF artifact requires a software development kit to produce or consume. OKF is designed to require no SDK."@en ; rdfs:range xsd:boolean ; rdfs:isDefinedBy <> . okf:resourceURL a owl:DatatypeProperty ; rdfs:label "resource URL"@en ; rdfs:comment "The URL of the underlying data resource described by an OKF document — e.g., a BigQuery dataset or table console URL."@en ; rdfs:range xsd:anyURI ; rdfs:isDefinedBy <> . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 4: Bundle Membership & Document Linkage Properties # ══════════════════════════════════════════════════════════════════════════════ okf:hasIndex a owl:ObjectProperty ; rdfs:label "has index"@en ; rdfs:comment "Links a KnowledgeBundle to its root IndexDocument manifest."@en ; rdfs:domain okf:KnowledgeBundle ; rdfs:range okf:IndexDocument ; rdfs:isDefinedBy <> . okf:hasDocument a owl:ObjectProperty ; rdfs:label "has document"@en ; rdfs:comment "Links a KnowledgeBundle or DatasetDocument to the OKF documents it contains."@en ; schema:domainIncludes okf:KnowledgeBundle, okf:DatasetDocument ; rdfs:isDefinedBy <> . okf:isDocumentOf a owl:ObjectProperty ; rdfs:label "is document of"@en ; rdfs:comment "Inverse of okf:hasDocument. Links an OKF document to the KnowledgeBundle it belongs to."@en ; owl:inverseOf okf:hasDocument ; rdfs:range okf:KnowledgeBundle ; rdfs:isDefinedBy <> . okf:definesMetric a owl:ObjectProperty ; rdfs:label "defines metric"@en ; rdfs:comment "Links a MetricDocument to the TableDocument that serves as its primary data source."@en ; rdfs:domain okf:MetricDocument ; rdfs:range okf:TableDocument ; rdfs:isDefinedBy <> . okf:producedBy a owl:ObjectProperty ; rdfs:label "produced by"@en ; rdfs:comment "Links an OKF artifact (bundle, tool, implementation) to the organization or agent that created it."@en ; rdfs:range schema:Organization ; rdfs:isDefinedBy <> . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 5: Table Schema Properties # ══════════════════════════════════════════════════════════════════════════════ okf:hasColumn a owl:ObjectProperty ; rdfs:label "has column"@en ; rdfs:comment "Links a TableDocument to one of its ColumnDefinitions."@en ; rdfs:domain okf:TableDocument ; rdfs:range okf:ColumnDefinition ; rdfs:isDefinedBy <> . okf:columnName a owl:DatatypeProperty ; rdfs:label "column name"@en ; rdfs:comment "The SQL column name as it appears in the underlying table schema."@en ; rdfs:domain okf:ColumnDefinition ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:columnDataType a owl:DatatypeProperty ; rdfs:label "column data type"@en ; rdfs:comment "The SQL or warehouse-native data type of the column (e.g., STRING, TIMESTAMP, FLOAT64, DATE, INTEGER)."@en ; rdfs:domain okf:ColumnDefinition ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:isForeignKeyTo a owl:ObjectProperty ; rdfs:label "is foreign key to"@en ; rdfs:comment "Asserts that a ColumnDefinition is a foreign key referencing the primary key of a target TableDocument."@en ; rdfs:domain okf:ColumnDefinition ; rdfs:range okf:TableDocument ; rdfs:isDefinedBy <> . okf:joinsWith a owl:ObjectProperty ; rdfs:label "joins with"@en ; rdfs:comment "Asserts that two TableDocuments can be joined on a shared key column."@en ; rdfs:domain okf:TableDocument ; rdfs:range okf:TableDocument ; owl:propertyType owl:SymmetricProperty ; rdfs:isDefinedBy <> . okf:joinKey a owl:DatatypeProperty ; rdfs:label "join key"@en ; rdfs:comment "The column name used as the join key between two tables related by okf:joinsWith."@en ; rdfs:domain okf:TableDocument ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . # ══════════════════════════════════════════════════════════════════════════════ # SECTION 6: Row-Level Data Record Properties # ══════════════════════════════════════════════════════════════════════════════ okf:isRowOf a owl:ObjectProperty ; rdfs:label "is row of"@en ; rdfs:comment "Links a row-level DataRecord instance to its parent TableDocument."@en ; rdfs:domain okf:DataRecord ; rdfs:isDefinedBy <> . okf:orderId a owl:DatatypeProperty ; rdfs:label "order ID"@en ; rdfs:comment "Globally unique order identifier. Primary key of the orders table."@en ; rdfs:domain okf:OrderRecord ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:customerId a owl:DatatypeProperty ; rdfs:label "customer ID"@en ; rdfs:comment "Unique customer identifier. Foreign key in the orders table; primary key in the customers table."@en ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:orderDate a owl:DatatypeProperty ; rdfs:label "order date"@en ; rdfs:comment "UTC date when the order was placed."@en ; rdfs:domain okf:OrderRecord ; rdfs:range xsd:date ; rdfs:isDefinedBy <> . okf:revenueUSD a owl:DatatypeProperty ; rdfs:label "revenue (USD)"@en ; rdfs:comment "Total order revenue in US dollars, inclusive of tax."@en ; rdfs:domain okf:OrderRecord ; rdfs:range xsd:decimal ; rdfs:isDefinedBy <> . okf:customerName a owl:DatatypeProperty ; rdfs:label "customer name"@en ; rdfs:comment "Full display name of the customer."@en ; rdfs:domain okf:CustomerRecord ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:email a owl:DatatypeProperty ; rdfs:label "email"@en ; rdfs:comment "Customer's primary contact email address."@en ; rdfs:domain okf:CustomerRecord ; rdfs:range xsd:string ; rdfs:isDefinedBy <> . okf:signupDate a owl:DatatypeProperty ; rdfs:label "signup date"@en ; rdfs:comment "Calendar date on which the customer registered."@en ; rdfs:domain okf:CustomerRecord ; rdfs:range xsd:date ; rdfs:isDefinedBy <> .