@prefix dcat: . @prefix dct: . @prefix owl: . @prefix prov: . @prefix rdf: . @prefix rdfs: . @prefix schema1: . @prefix sm: . @prefix xsd: . sm:AuditRecord a rdfs:Class, owl:Class ; rdfs:label "AuditRecord"@en ; schema1:description "An audit record that is compliance-related."@en ; schema1:name "AuditRecord"@en ; rdfs:comment "An audit record that is compliance-related."@en ; rdfs:isDefinedBy sm: ; rdfs:subClassOf sm:ComplianceRelated . sm:BillingAccount a rdfs:Class, owl:Class ; rdfs:label "BillingAccount"@en ; schema1:description "A billing account associated with a customer."@en ; schema1:name "BillingAccount"@en ; rdfs:comment "A billing account associated with a customer."@en ; rdfs:isDefinedBy sm: . sm:CatalogCapability a rdfs:Class, owl:Class ; rdfs:label "CatalogCapability"@en ; schema1:description "A semantic catalog capability enabled by the knowledge graph."@en ; schema1:name "CatalogCapability"@en ; rdfs:comment "A semantic catalog capability enabled by the knowledge graph."@en ; rdfs:isDefinedBy sm: . sm:ComplianceOfficer a rdfs:Class, owl:Class ; rdfs:label "ComplianceOfficer"@en ; schema1:description "A person or role responsible for compliance work."@en ; schema1:name "ComplianceOfficer"@en ; rdfs:comment "A person or role responsible for compliance work."@en ; rdfs:isDefinedBy sm: ; rdfs:subClassOf sm:ComplianceRelated . sm:ComplianceRelated a rdfs:Class, owl:Class ; rdfs:label "ComplianceRelated"@en ; schema1:description "A superclass for compliance-related catalog entities."@en ; schema1:name "ComplianceRelated"@en ; rdfs:comment "A superclass for compliance-related catalog entities."@en ; rdfs:isDefinedBy sm: . sm:Contract a rdfs:Class, owl:Class ; rdfs:label "Contract"@en ; schema1:description "A contractual relationship or agreement involving a customer."@en ; schema1:name "Contract"@en ; rdfs:comment "A contractual relationship or agreement involving a customer."@en ; rdfs:isDefinedBy sm: . sm:Customer a rdfs:Class, owl:Class ; rdfs:label "Customer"@en ; schema1:description "A harmonized customer entity identified by a stable IRI."@en ; schema1:name "Customer"@en ; rdfs:comment "A harmonized customer entity identified by a stable IRI."@en ; rdfs:isDefinedBy sm: . sm:DataSource a rdfs:Class, owl:Class ; rdfs:label "DataSource"@en ; schema1:description "A source system or dataset feeding the medallion architecture."@en ; schema1:name "DataSource"@en ; rdfs:comment "A source system or dataset feeding the medallion architecture."@en ; rdfs:isDefinedBy sm: . sm:ExternalRegistry a rdfs:Class, owl:Class ; rdfs:label "ExternalRegistry"@en ; schema1:description "An external registry that contributes entity identity or enrichment data."@en ; schema1:name "ExternalRegistry"@en ; rdfs:comment "An external registry that contributes entity identity or enrichment data."@en ; rdfs:isDefinedBy sm: . sm:HarmonizationActivity a rdfs:Class, owl:Class ; rdfs:label "HarmonizationActivity"@en ; schema1:description "A data transformation activity that maps structured data into RDF."@en ; schema1:name "HarmonizationActivity"@en ; rdfs:comment "A data transformation activity that maps structured data into RDF."@en ; rdfs:isDefinedBy sm: . sm:MedallionLayer a rdfs:Class, owl:Class ; rdfs:label "MedallionLayer"@en ; schema1:description "A Bronze, Silver, or Gold layer in a medallion architecture."@en ; schema1:name "MedallionLayer"@en ; rdfs:comment "A Bronze, Silver, or Gold layer in a medallion architecture."@en ; rdfs:isDefinedBy sm: . sm:RegulatoryFiling a rdfs:Class, owl:Class ; rdfs:label "RegulatoryFiling"@en ; schema1:description "A regulatory filing that is compliance-related."@en ; schema1:name "RegulatoryFiling"@en ; rdfs:comment "A regulatory filing that is compliance-related."@en ; rdfs:isDefinedBy sm: ; rdfs:subClassOf sm:ComplianceRelated . sm:answerPattern a rdf:Property, owl:DatatypeProperty ; rdfs:label "answerPattern"@en ; schema1:description "Stores the query or traversal pattern used to answer a catalog question."@en ; schema1:name "answerPattern"@en ; rdfs:comment "Stores the query or traversal pattern used to answer a catalog question."@en ; rdfs:isDefinedBy sm: . sm:catalogQuestion a rdf:Property, owl:DatatypeProperty ; rdfs:label "catalogQuestion"@en ; schema1:description "Stores a question that the graph-powered catalog can answer."@en ; schema1:name "catalogQuestion"@en ; rdfs:comment "Stores a question that the graph-powered catalog can answer."@en ; rdfs:isDefinedBy sm: . sm:contributesRecord a rdf:Property, owl:ObjectProperty ; rdfs:label "contributesRecord"@en ; schema1:description "Indicates that a data source contributes a record to the catalog."@en ; schema1:name "contributesRecord"@en ; rdfs:comment "Indicates that a data source contributes a record to the catalog."@en ; rdfs:isDefinedBy sm: . sm:dependsOn a rdf:Property, owl:ObjectProperty ; rdfs:label "dependsOn"@en ; schema1:description "Connects a downstream catalog object to an upstream dependency."@en ; schema1:name "dependsOn"@en ; rdfs:comment "Connects a downstream catalog object to an upstream dependency."@en ; rdfs:isDefinedBy sm: . sm:email a rdf:Property, owl:DatatypeProperty ; rdfs:label "email"@en ; schema1:description "Local email property used in executable examples."@en ; schema1:name "email"@en ; rdfs:comment "Local email property used in executable examples."@en ; rdfs:isDefinedBy sm: . sm:hasBillingAccount a rdf:Property, owl:ObjectProperty ; rdfs:label "hasBillingAccount"@en ; schema1:description "Connects a customer to a billing account."@en ; schema1:name "hasBillingAccount"@en ; rdfs:comment "Connects a customer to a billing account."@en ; rdfs:isDefinedBy sm: . sm:hasContract a rdf:Property, owl:ObjectProperty ; rdfs:label "hasContract"@en ; schema1:description "Connects a customer to a contract."@en ; schema1:name "hasContract"@en ; rdfs:comment "Connects a customer to a contract."@en ; rdfs:isDefinedBy sm: . sm:name a rdf:Property, owl:DatatypeProperty ; rdfs:label "name"@en ; schema1:description "Local name property used in executable examples."@en ; schema1:name "name"@en ; rdfs:comment "Local name property used in executable examples."@en ; rdfs:isDefinedBy sm: . sm:outstandingBalance a rdf:Property, owl:DatatypeProperty ; rdfs:label "outstandingBalance"@en ; schema1:description "Records the unpaid balance on a billing account."@en ; schema1:name "outstandingBalance"@en ; rdfs:comment "Records the unpaid balance on a billing account."@en ; rdfs:isDefinedBy sm: . sm:paymentMethod a rdf:Property, owl:DatatypeProperty ; rdfs:label "paymentMethod"@en ; schema1:description "Records a billing account payment method."@en ; schema1:name "paymentMethod"@en ; rdfs:comment "Records a billing account payment method."@en ; rdfs:isDefinedBy sm: . sm:registeredIn a rdf:Property, owl:ObjectProperty ; rdfs:label "registeredIn"@en ; schema1:description "Connects an entity to an external registry record."@en ; schema1:name "registeredIn"@en ; rdfs:comment "Connects an entity to an external registry record."@en ; rdfs:isDefinedBy sm: . sm:semanticMedallionCatalog a schema1:DataCatalog, dcat:Catalog ; rdfs:label "Semantic Medallion catalog"@en ; schema1:description "DCAT catalog describing the generated customer knowledge graph."@en ; schema1:name "Semantic Medallion catalog"@en ; rdfs:comment "DCAT catalog describing the generated customer knowledge graph."@en ; dcat:dataset sm:dataset-customers . sm:sourceId a rdf:Property, owl:DatatypeProperty ; rdfs:label "sourceId"@en ; schema1:description "Records the source-local identifier captured in the Silver layer."@en ; schema1:name "sourceId"@en ; rdfs:comment "Records the source-local identifier captured in the Silver layer."@en ; rdfs:isDefinedBy sm: . sm:sourceSystem a rdf:Property, owl:DatatypeProperty ; rdfs:label "sourceSystem"@en ; schema1:description "Connects an entity to its originating source system."@en ; schema1:name "sourceSystem"@en ; rdfs:comment "Connects an entity to its originating source system."@en ; rdfs:isDefinedBy sm: . sm:status a rdf:Property, owl:DatatypeProperty ; rdfs:label "status"@en ; schema1:description "Records a contract or operational status."@en ; schema1:name "status"@en ; rdfs:comment "Records a contract or operational status."@en ; rdfs:isDefinedBy sm: . sm:a1 a schema1:Answer ; rdfs:label "Answer 1"@en ; schema1:description "It is a medallion architecture pattern where the Gold layer is published as a connected RDF knowledge graph."@en ; schema1:name "Answer 1"@en ; rdfs:comment "It is a medallion architecture pattern where the Gold layer is published as a connected RDF knowledge graph."@en . sm:a10 a schema1:Answer ; rdfs:label "Answer 10"@en ; schema1:description "The article emphasizes that stable identifier design should begin early."@en ; schema1:name "Answer 10"@en ; rdfs:comment "The article emphasizes that stable identifier design should begin early."@en . sm:a2 a schema1:Answer ; rdfs:label "Answer 2"@en ; schema1:description "Stable IRIs give records durable identifiers that can connect data across source systems."@en ; schema1:name "Answer 2"@en ; rdfs:comment "Stable IRIs give records durable identifiers that can connect data across source systems."@en . sm:a3 a schema1:Answer ; rdfs:label "Answer 3"@en ; schema1:description "Gold changes from clean joined tables into harmonized RDF mapped to a shared ontology."@en ; schema1:name "Answer 3"@en ; rdfs:comment "Gold changes from clean joined tables into harmonized RDF mapped to a shared ontology."@en . sm:a4 a schema1:Answer ; rdfs:label "Answer 4"@en ; schema1:description "The catalog can answer semantic relationship questions directly instead of only listing tables and columns."@en ; schema1:name "Answer 4"@en ; rdfs:comment "The catalog can answer semantic relationship questions directly instead of only listing tables and columns."@en . sm:a5 a schema1:Answer ; rdfs:label "Answer 5"@en ; schema1:description "DCAT standardizes catalog, dataset, distribution, and service metadata in RDF."@en ; schema1:name "Answer 5"@en ; rdfs:comment "DCAT standardizes catalog, dataset, distribution, and service metadata in RDF."@en . sm:a6 a schema1:Answer ; rdfs:label "Answer 6"@en ; schema1:description "PROV-O links generated datasets to source datasets and harmonization activities."@en ; schema1:name "Answer 6"@en ; rdfs:comment "PROV-O links generated datasets to source datasets and harmonization activities."@en . sm:a7 a schema1:Answer ; rdfs:label "Answer 7"@en ; schema1:description "It maps structured DataFrames through templates into RDF triples."@en ; schema1:name "Answer 7"@en ; rdfs:comment "It maps structured DataFrames through templates into RDF triples."@en . sm:a8 a schema1:Answer ; rdfs:label "Answer 8"@en ; schema1:description "SPARQL queries both the business data and the catalog metadata in the same graph model."@en ; schema1:name "Answer 8"@en ; rdfs:comment "SPARQL queries both the business data and the catalog metadata in the same graph model."@en . sm:a9 a schema1:Answer ; rdfs:label "Answer 9"@en ; schema1:description "Multiple source records can be linked to one entity using stable IRIs and equivalence relationships."@en ; schema1:name "Answer 9"@en ; rdfs:comment "Multiple source records can be linked to one entity using stable IRIs and equivalence relationships."@en . sm:activity-customer-harmonization a prov:Activity, sm:HarmonizationActivity ; rdfs:label "Customer harmonization"@en ; schema1:description "Representative activity that maps Silver customer DataFrames to Gold RDF."@en ; schema1:name "Customer harmonization"@en ; rdfs:comment "Representative activity that maps Silver customer DataFrames to Gold RDF."@en . sm:billing-B-001 a sm:BillingAccount ; rdfs:label "Billing B 001"@en ; schema1:accountId "B-001" ; schema1:description "Representative billing account instance."@en ; schema1:name "Billing B 001"@en ; rdfs:comment "Representative billing account instance."@en ; sm:outstandingBalance 250.0 ; sm:paymentMethod "Credit Card" . sm:billing-B-002 a sm:BillingAccount ; rdfs:label "Billing B 002"@en ; schema1:accountId "B-002" ; schema1:description "Representative billing account instance."@en ; schema1:name "Billing B 002"@en ; rdfs:comment "Representative billing account instance."@en ; sm:outstandingBalance 0.0 ; sm:paymentMethod "Credit Card" . sm:billing-B-003 a sm:BillingAccount ; rdfs:label "Billing B 003"@en ; schema1:accountId "B-003" ; schema1:description "Representative billing account instance."@en ; schema1:name "Billing B 003"@en ; rdfs:comment "Representative billing account instance."@en ; sm:outstandingBalance 82.75 ; sm:paymentMethod "Credit Card" . sm:billingSystem a schema1:DataFeed, sm:DataSource ; rdfs:label "Billing"@en ; schema1:description "Billing platform"@en ; schema1:identifier "billing-extract" ; schema1:isPartOf sm:overviewSection ; schema1:name "Billing"@en ; rdfs:comment "Billing platform"@en . sm:capabilitiesSection a schema1:ArticleSection ; rdfs:label "Catalog capabilities"@en ; schema1:description "Entity resolution, semantic search, and impact analysis capabilities gained from graph-backed catalog data."@en ; schema1:isPartOf sm:article ; schema1:name "Catalog capabilities"@en ; rdfs:comment "Entity resolution, semantic search, and impact analysis capabilities gained from graph-backed catalog data."@en . sm:codexDesktopEnvironment a schema1:SoftwareApplication ; rdfs:label "Codex desktop"@en ; schema1:description "Local coding environment used for artifact generation and validation."@en ; schema1:name "Codex desktop"@en ; schema1:url ; rdfs:comment "Local coding environment used for artifact generation and validation."@en . sm:contract-K-2024-001 a sm:Contract ; rdfs:label "Contract K 2024 001"@en ; schema1:description "Representative contract instance."@en ; schema1:name "Contract K 2024 001"@en ; rdfs:comment "Representative contract instance."@en ; sm:status "Active" . sm:contract-K-2024-002 a sm:Contract ; rdfs:label "Contract K 2024 002"@en ; schema1:description "Representative contract instance."@en ; schema1:name "Contract K 2024 002"@en ; rdfs:comment "Representative contract instance."@en ; sm:status "Expired" . sm:contract-K-2024-003 a sm:Contract ; rdfs:label "Contract K 2024 003"@en ; schema1:description "Representative contract instance."@en ; schema1:name "Contract K 2024 003"@en ; rdfs:comment "Representative contract instance."@en ; sm:status "Active" . sm:crmSystem a schema1:DataFeed, sm:DataSource ; rdfs:label "CRM"@en ; schema1:description "Customer relationship management system"@en ; schema1:identifier "crm-export" ; schema1:isPartOf sm:overviewSection ; schema1:name "CRM"@en ; rdfs:comment "Customer relationship management system"@en . sm:customer-C-001 a schema1:Person, sm:Customer ; rdfs:label "Alice Johnson"@en ; schema1:description "Representative customer instance used by the executable SPARQL examples."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Alice Johnson"@en ; rdfs:comment "Representative customer instance used by the executable SPARQL examples."@en ; owl:sameAs sm:billing-account-holder-12345, sm:external-registry-company-67890 ; sm:email "alice@example.com" ; sm:hasBillingAccount sm:billing-B-001 ; sm:hasContract sm:contract-K-2024-001 ; sm:name "Alice Johnson" ; sm:registeredIn sm:registry-company-12345 ; sm:sourceId "CRM-12345" ; sm:sourceSystem "CRM" . sm:customer-C-002 a schema1:Person, sm:Customer ; rdfs:label "Bob Smith"@en ; schema1:description "Representative customer instance used by the executable SPARQL examples."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Bob Smith"@en ; rdfs:comment "Representative customer instance used by the executable SPARQL examples."@en ; sm:email "bob@example.com" ; sm:hasBillingAccount sm:billing-B-002 ; sm:hasContract sm:contract-K-2024-002 ; sm:name "Bob Smith" ; sm:registeredIn sm:registry-company-67890 ; sm:sourceId "CRM-12346" ; sm:sourceSystem "CRM" . sm:customer-C-003 a schema1:Person, sm:Customer ; rdfs:label "Carla Nguyen"@en ; schema1:description "Representative customer instance used by the executable SPARQL examples."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Carla Nguyen"@en ; rdfs:comment "Representative customer instance used by the executable SPARQL examples."@en ; sm:email "carla@example.com" ; sm:hasBillingAccount sm:billing-B-003 ; sm:hasContract sm:contract-K-2024-003 ; sm:name "Carla Nguyen" ; sm:registeredIn sm:registry-company-34567 ; sm:sourceId "REG-34567" ; sm:sourceSystem "External Registry" . sm:dataset-customers a schema1:Dataset, dcat:Dataset ; rdfs:label "Customer Master Data"@en ; dct:description "Unified customer records from CRM, billing, and registry"@en ; dct:issued "2024-01-15"^^xsd:date ; dct:modified "2024-04-20"^^xsd:date ; dct:publisher sm:dataTeam ; dct:title "Customer Master Data"@en ; schema1:description "Unified customer records from CRM, billing, and registry."@en ; schema1:name "Customer Master Data"@en ; rdfs:comment "Unified customer records from CRM, billing, and registry."@en ; dcat:distribution sm:dataset-customers-parquet, sm:dataset-customers-sparql ; dcat:theme ; prov:wasDerivedFrom sm:dataset-billing-extract, sm:dataset-crm-export ; prov:wasGeneratedBy sm:activity-customer-harmonization . sm:dataset-customers-parquet a dcat:Distribution ; rdfs:label "Customer parquet distribution"@en ; dct:format "application/vnd.apache.parquet" ; schema1:description "Distribution for Customer parquet distribution."@en ; schema1:name "Customer parquet distribution"@en ; rdfs:comment "Distribution for Customer parquet distribution."@en ; dcat:downloadURL sm:silver-customers-parquet . sm:dataset-customers-sparql a dcat:Distribution ; rdfs:label "Customer graph SPARQL distribution"@en ; dct:format "application/sparql-query" ; schema1:description "Distribution for Customer graph SPARQL distribution."@en ; schema1:name "Customer graph SPARQL distribution"@en ; rdfs:comment "Distribution for Customer graph SPARQL distribution."@en ; dcat:accessURL . sm:dcatConcept a schema1:DefinedTerm ; rdfs:label "DCAT"@en ; schema1:description "The W3C Data Catalog Vocabulary used to describe catalogs, datasets, distributions, and data services."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "DCAT"@en ; rdfs:comment "The W3C Data Catalog Vocabulary used to describe catalogs, datasets, distributions, and data services."@en . sm:dcatSection a schema1:ArticleSection ; rdfs:label "DCAT catalog layer"@en ; schema1:about ; schema1:description "Dataset, distribution, and provenance metadata modeled with DCAT and PROV-O."@en ; schema1:isPartOf sm:article ; schema1:name "DCAT catalog layer"@en ; rdfs:comment "Dataset, distribution, and provenance metadata modeled with DCAT and PROV-O."@en . sm:externalRegistry a schema1:DataFeed, sm:DataSource ; rdfs:label "External Registry"@en ; schema1:description "External company registry"@en ; schema1:identifier "registry-snapshot" ; schema1:isPartOf sm:overviewSection ; schema1:name "External Registry"@en ; rdfs:comment "External company registry"@en . sm:faq a schema1:FAQPage ; rdfs:label "Semantic Medallion FAQ"@en ; schema1:description "Questions and answers generated from the article."@en ; schema1:mainEntity sm:q1, sm:q10, sm:q2, sm:q3, sm:q4, sm:q5, sm:q6, sm:q7, sm:q8, sm:q9 ; schema1:name "Semantic Medallion FAQ"@en ; rdfs:comment "Questions and answers generated from the article."@en . sm:goldGraphLayer a schema1:CreativeWork, sm:MedallionLayer ; rdfs:label "Gold Graph"@en ; schema1:description "Harmonized RDF graph mapped to a shared ontology and published for SPARQL queries."@en ; schema1:isPartOf sm:architectureSection ; schema1:name "Gold Graph"@en ; rdfs:comment "Harmonized RDF graph mapped to a shared ontology and published for SPARQL queries."@en ; sm:dependsOn sm:silverLayer . sm:gpt5ChatInterface a schema1:SoftwareApplication ; rdfs:label "GPT-5 Chat"@en ; schema1:description "Language model environment used to generate this artifact set."@en ; schema1:name "GPT-5 Chat"@en ; schema1:url ; rdfs:comment "Language model environment used to generate this artifact set."@en . sm:howto a schema1:HowTo ; rdfs:label "Build a Semantic Medallion catalog"@en ; schema1:description "Practical workflow implied by the article."@en ; schema1:name "Build a Semantic Medallion catalog"@en ; schema1:step sm:step1, sm:step2, sm:step3, sm:step4, sm:step5, sm:step6 ; rdfs:comment "Practical workflow implied by the article."@en . sm:iriMintingConcept a schema1:DefinedTerm ; rdfs:label "IRI minting"@en ; schema1:description "The practice of assigning stable, globally unique identifiers to entities during the Silver layer."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "IRI minting"@en ; rdfs:comment "The practice of assigning stable, globally unique identifiers to entities during the Silver layer."@en . sm:kgGeneratorSkill a schema1:SoftwareApplication ; rdfs:label "kg-generator skill"@en ; schema1:description "Generated the RDF knowledge graph and compliance model."@en ; schema1:name "kg-generator skill"@en ; schema1:url ; rdfs:comment "Generated the RDF knowledge graph and compliance model."@en . sm:maplibConcept a schema1:DefinedTerm ; rdfs:label "maplib"@en ; schema1:description "Python mapping library used in the article to transform DataFrames into RDF."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "maplib"@en ; rdfs:comment "Python mapping library used in the article to transform DataFrames into RDF."@en . sm:modernData101 a schema1:Organization ; rdfs:label "Modern Data 101"@en ; schema1:description "Publisher of the article and curator of Modern Data topics."@en ; schema1:name "Modern Data 101"@en ; schema1:url ; rdfs:comment "Publisher of the article and curator of Modern Data topics."@en . sm:ottrConcept a schema1:DefinedTerm ; rdfs:label "OTTR templates"@en ; schema1:description "Reusable template definitions for mapping tabular rows into RDF triples."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "OTTR templates"@en ; rdfs:comment "Reusable template definitions for mapping tabular rows into RDF triples."@en . sm:provConcept a schema1:DefinedTerm ; rdfs:label "PROV-O"@en ; schema1:description "The W3C provenance ontology used to trace derivation and generation activities."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "PROV-O"@en ; rdfs:comment "The W3C provenance ontology used to trace derivation and generation activities."@en . sm:q1 a schema1:Question ; rdfs:label "What is the Semantic Medallion?"@en ; schema1:acceptedAnswer sm:a1 ; schema1:name "What is the Semantic Medallion?"@en . sm:q10 a schema1:Question ; rdfs:label "What is the key implementation risk?"@en ; schema1:acceptedAnswer sm:a10 ; schema1:name "What is the key implementation risk?"@en . sm:q2 a schema1:Question ; rdfs:label "Why mint IRIs in the Silver layer?"@en ; schema1:acceptedAnswer sm:a2 ; schema1:name "Why mint IRIs in the Silver layer?"@en . sm:q3 a schema1:Question ; rdfs:label "What changes in the Gold layer?"@en ; schema1:acceptedAnswer sm:a3 ; schema1:name "What changes in the Gold layer?"@en . sm:q4 a schema1:Question ; rdfs:label "Why does this help data catalogs?"@en ; schema1:acceptedAnswer sm:a4 ; schema1:name "Why does this help data catalogs?"@en . sm:q5 a schema1:Question ; rdfs:label "What role does DCAT play?"@en ; schema1:acceptedAnswer sm:a5 ; schema1:name "What role does DCAT play?"@en . sm:q6 a schema1:Question ; rdfs:label "How is provenance represented?"@en ; schema1:acceptedAnswer sm:a6 ; schema1:name "How is provenance represented?"@en . sm:q7 a schema1:Question ; rdfs:label "What does maplib do?"@en ; schema1:acceptedAnswer sm:a7 ; schema1:name "What does maplib do?"@en . sm:q8 a schema1:Question ; rdfs:label "Why is SPARQL important here?"@en ; schema1:acceptedAnswer sm:a8 ; schema1:name "Why is SPARQL important here?"@en . sm:q9 a schema1:Question ; rdfs:label "What is entity resolution in this architecture?"@en ; schema1:acceptedAnswer sm:a9 ; schema1:name "What is entity resolution in this architecture?"@en . sm:query-active-contract-billing-issues a schema1:CreativeWork, schema1:SoftwareSourceCode ; rdfs:label "Find customers with billing issues and active contracts"@en ; schema1:codeSampleType "Executable SPARQL query adapted from article example" ; schema1:description "Source image query selected customers with active contracts and balances greater than zero."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Find customers with billing issues and active contracts"@en ; schema1:potentialAction sm:query-active-contract-billing-issues-runAction ; schema1:programmingLanguage "SPARQL" ; schema1:target sm:uriBurnerSparqlEndpoint ; schema1:text """PREFIX sm: SELECT ?customer ?name ?balance ?contractStatus WHERE { GRAPH { ?customer a sm:Customer ; sm:name ?name ; sm:hasBillingAccount ?account ; sm:hasContract ?contract . ?account sm:outstandingBalance ?balance . ?contract sm:status ?contractStatus . FILTER(?contractStatus = "Active" && ?balance > 0) } }""" ; rdfs:comment "Source image query selected customers with active contracts and balances greater than zero."@en . sm:query-active-contract-billing-issues-runAction a schema1:SearchAction ; rdfs:label "Run live query"@en ; schema1:description "URL-encoded live query action for URIBurner SPARQL."@en ; schema1:name "Run live query"@en ; schema1:target ; rdfs:comment "URL-encoded live query action for URIBurner SPARQL."@en . sm:query-customer-datasets a schema1:CreativeWork, schema1:SoftwareSourceCode ; rdfs:label "Find datasets that contain customer information"@en ; schema1:codeSampleType "Executable SPARQL query adapted from article example" ; schema1:description "Source image query used DCAT distribution metadata and customer instances to discover datasets."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Find datasets that contain customer information"@en ; schema1:potentialAction sm:query-customer-datasets-runAction ; schema1:programmingLanguage "SPARQL" ; schema1:target sm:uriBurnerSparqlEndpoint ; schema1:text """PREFIX sm: PREFIX dcat: PREFIX dct: SELECT ?dataset ?title WHERE { GRAPH { ?dataset a dcat:Dataset ; dct:title ?title ; dcat:distribution ?dist . ?dist dcat:accessURL ?endpoint . ?customer a sm:Customer . } }""" ; rdfs:comment "Source image query used DCAT distribution metadata and customer instances to discover datasets."@en . sm:query-customer-datasets-runAction a schema1:SearchAction ; rdfs:label "Run live query"@en ; schema1:description "URL-encoded live query action for URIBurner SPARQL."@en ; schema1:name "Run live query"@en ; schema1:target ; rdfs:comment "URL-encoded live query action for URIBurner SPARQL."@en . sm:query-customer-properties a schema1:CreativeWork, schema1:SoftwareSourceCode ; rdfs:label "Show every property and value about customer C-001"@en ; schema1:codeSampleType "Executable SPARQL query adapted from article example" ; schema1:description "Source image query used ?property ?value."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Show every property and value about customer C-001"@en ; schema1:potentialAction sm:query-customer-properties-runAction ; schema1:programmingLanguage "SPARQL" ; schema1:target sm:uriBurnerSparqlEndpoint ; schema1:text """PREFIX sm: SELECT ?property ?value WHERE { GRAPH { sm:customer-C-001 ?property ?value . } }""" ; rdfs:comment "Source image query used ?property ?value."@en . sm:query-customer-properties-runAction a schema1:SearchAction ; rdfs:label "Run live query"@en ; schema1:description "URL-encoded live query action for URIBurner SPARQL."@en ; schema1:name "Run live query"@en ; schema1:target ; rdfs:comment "URL-encoded live query action for URIBurner SPARQL."@en . sm:query-source-counts a schema1:CreativeWork, schema1:SoftwareSourceCode ; rdfs:label "Which sources contribute to customer records?"@en ; schema1:codeSampleType "Executable SPARQL query adapted from article example" ; schema1:description "Source image query grouped :Customer records by :sourceSystem."@en ; schema1:isPartOf sm:queryExamplesSection ; schema1:name "Which sources contribute to customer records?"@en ; schema1:potentialAction sm:query-source-counts-runAction ; schema1:programmingLanguage "SPARQL" ; schema1:target sm:uriBurnerSparqlEndpoint ; schema1:text """PREFIX sm: SELECT ?source (COUNT(?customer) AS ?records) WHERE { GRAPH { ?customer a sm:Customer ; sm:sourceSystem ?source . } } GROUP BY ?source""" ; rdfs:comment "Source image query grouped :Customer records by :sourceSystem."@en . sm:query-source-counts-runAction a schema1:SearchAction ; rdfs:label "Run live query"@en ; schema1:description "URL-encoded live query action for URIBurner SPARQL."@en ; schema1:name "Run live query"@en ; schema1:target ; rdfs:comment "URL-encoded live query action for URIBurner SPARQL."@en . sm:rdfInfographicSkill a schema1:SoftwareApplication ; rdfs:label "rdf-infographic-skill"@en ; schema1:description "Generated RDF-backed HTML and Markdown companion artifacts."@en ; schema1:name "rdf-infographic-skill"@en ; schema1:url ; rdfs:comment "Generated RDF-backed HTML and Markdown companion artifacts."@en . sm:registry-company-12345 a sm:ExternalRegistry ; rdfs:label "Registry Company 12345"@en ; schema1:description "Representative external registry record."@en ; schema1:name "Registry Company 12345"@en ; rdfs:comment "Representative external registry record."@en . sm:registry-company-34567 a sm:ExternalRegistry ; rdfs:label "Registry Company 34567"@en ; schema1:description "Representative external registry record."@en ; schema1:name "Registry Company 34567"@en ; rdfs:comment "Representative external registry record."@en . sm:registry-company-67890 a sm:ExternalRegistry ; rdfs:label "Registry Company 67890"@en ; schema1:description "Representative external registry record."@en ; schema1:name "Registry Company 67890"@en ; rdfs:comment "Representative external registry record."@en . sm:step1 a schema1:HowToStep ; rdfs:label "Harvest source data"@en ; schema1:description "Land raw data in the Bronze layer from APIs, databases, files, and registries."@en ; schema1:name "Harvest source data"@en ; rdfs:comment "Land raw data in the Bronze layer from APIs, databases, files, and registries."@en . sm:step2 a schema1:HowToStep ; rdfs:label "Structure and identify records"@en ; schema1:description "Create Silver DataFrames and mint stable IRIs for entities."@en ; schema1:name "Structure and identify records"@en ; rdfs:comment "Create Silver DataFrames and mint stable IRIs for entities."@en . sm:step3 a schema1:HowToStep ; rdfs:label "Define ontology templates"@en ; schema1:description "Use a shared vocabulary and OTTR-style templates to map columns to RDF properties."@en ; schema1:name "Define ontology templates"@en ; rdfs:comment "Use a shared vocabulary and OTTR-style templates to map columns to RDF properties."@en . sm:step4 a schema1:HowToStep ; rdfs:label "Publish Gold RDF"@en ; schema1:description "Generate the RDF graph and load it into a SPARQL-capable catalog endpoint."@en ; schema1:name "Publish Gold RDF"@en ; rdfs:comment "Generate the RDF graph and load it into a SPARQL-capable catalog endpoint."@en . sm:step5 a schema1:HowToStep ; rdfs:label "Describe datasets with DCAT"@en ; schema1:description "Model datasets, distributions, services, and provenance as catalog metadata."@en ; schema1:name "Describe datasets with DCAT"@en ; rdfs:comment "Model datasets, distributions, services, and provenance as catalog metadata."@en . sm:step6 a schema1:HowToStep ; rdfs:label "Query across data and metadata"@en ; schema1:description "Use SPARQL to inspect customer entities, sources, datasets, and lineage."@en ; schema1:name "Query across data and metadata"@en ; rdfs:comment "Use SPARQL to inspect customer entities, sources, datasets, and lineage."@en . sm:uriBurnerResolver a schema1:SoftwareApplication ; rdfs:label "URIBurner"@en ; schema1:description "Linked Data resolver used for entity description links."@en ; schema1:name "URIBurner"@en ; schema1:url ; rdfs:comment "Linked Data resolver used for entity description links."@en . sm:virtuosoServer a schema1:SoftwareApplication ; rdfs:label "OpenLink Virtuoso"@en ; schema1:description "RDF database and SPARQL endpoint platform backing URIBurner."@en ; schema1:name "OpenLink Virtuoso"@en ; schema1:url ; rdfs:comment "RDF database and SPARQL endpoint platform backing URIBurner."@en ; owl:sameAs . a schema1:Person ; rdfs:label "Veronika Heimsbakk"@en ; schema1:description "Knowledge graph specialist, semantic technologies expert, author, and speaker cited as the contributing expert for the article."@en ; schema1:identifier "https://substack.com/@veronahe" ; schema1:name "Veronika Heimsbakk"@en ; schema1:url ; rdfs:comment "Knowledge graph specialist, semantic technologies expert, author, and speaker cited as the contributing expert for the article."@en ; owl:sameAs . sm:bronzeLayer a schema1:CreativeWork, sm:MedallionLayer ; rdfs:label "Bronze"@en ; schema1:description "Raw harvested data from APIs, databases, file shares, and registries."@en ; schema1:isPartOf sm:architectureSection ; schema1:name "Bronze"@en ; rdfs:comment "Raw harvested data from APIs, databases, file shares, and registries."@en . sm:goldGraphConcept a schema1:DefinedTerm ; rdfs:label "Gold Graph"@en ; schema1:description "The RDF publication layer that replaces isolated Gold tables with connected knowledge."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "Gold Graph"@en ; rdfs:comment "The RDF publication layer that replaces isolated Gold tables with connected knowledge."@en . sm:knowledgeGraphCatalogConcept a schema1:DefinedTerm ; rdfs:label "Knowledge graph-powered data catalog"@en ; schema1:description "A catalog that describes data semantically and exposes relationships directly in RDF."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "Knowledge graph-powered data catalog"@en ; rdfs:comment "A catalog that describes data semantically and exposes relationships directly in RDF."@en . sm:silverLayer a schema1:CreativeWork, sm:MedallionLayer ; rdfs:label "Silver"@en ; schema1:description "Structured DataFrames with stable entity IRIs and source identifiers."@en ; schema1:isPartOf sm:architectureSection ; schema1:name "Silver"@en ; rdfs:comment "Structured DataFrames with stable entity IRIs and source identifiers."@en ; sm:dependsOn sm:bronzeLayer . sm:semanticMedallionConcept a schema1:DefinedTerm ; rdfs:label "Semantic Medallion"@en ; schema1:description "A medallion architecture variant where the Gold layer is an RDF knowledge graph."@en ; schema1:inDefinedTermSet sm:glossary ; schema1:name "Semantic Medallion"@en ; rdfs:comment "A medallion architecture variant where the Gold layer is an RDF knowledge graph."@en . sm:architectureSection a schema1:ArticleSection ; rdfs:label "Architecture"@en ; schema1:about sm:goldGraphConcept ; schema1:description "Bronze, Silver, and Gold layers reinterpreted as semantic enrichment layers."@en ; schema1:hasPart sm:bronzeLayer, sm:goldGraphLayer, sm:silverLayer ; schema1:isPartOf sm:article ; schema1:name "Architecture"@en ; rdfs:comment "Bronze, Silver, and Gold layers reinterpreted as semantic enrichment layers."@en . sm:overviewSection a schema1:ArticleSection ; rdfs:label "Semantic medallion overview"@en ; schema1:about sm:semanticMedallionConcept ; schema1:description "Summary of the shift from clean Gold tables to connected Gold RDF."@en ; schema1:hasPart sm:billingSystem, sm:crmSystem, sm:externalRegistry ; schema1:isPartOf sm:article ; schema1:name "Semantic medallion overview"@en ; rdfs:comment "Summary of the shift from clean Gold tables to connected Gold RDF."@en . sm:uriBurnerSparqlEndpoint a schema1:WebAPI ; rdfs:label "URIBurner SPARQL endpoint"@en ; schema1:description "Default live endpoint for the generated executable query links."@en ; schema1:name "URIBurner SPARQL endpoint"@en ; schema1:url ; rdfs:comment "Default live endpoint for the generated executable query links."@en . sm:article a schema1:Article, schema1:TechArticle ; rdfs:label "The Semantic Medallion: Building a Knowledge Graph-Powered Data Catalog"@en ; schema1:about , , , sm:knowledgeGraphCatalogConcept, sm:semanticMedallionConcept ; schema1:abstract "The article reframes the Gold medallion layer as a semantic knowledge graph built from Silver DataFrames with stable IRIs, ontology mappings, RDF, DCAT, and SPARQL."@en ; schema1:articleSection "Expert's Desk"@en ; schema1:author ; schema1:datePublished "2026-05-14T12:26:38+00:00"^^xsd:dateTime ; schema1:description "An article explaining how a medallion architecture can publish its Gold layer as an RDF knowledge graph-backed data catalog."@en ; schema1:hasPart sm:architectureSection, sm:capabilitiesSection, sm:dcatSection, sm:faq, sm:glossary, sm:howto, sm:overviewSection, sm:queryExamplesSection ; schema1:headline "The Semantic Medallion: Building a Knowledge Graph-Powered Data Catalog"@en ; schema1:name "The Semantic Medallion: Building a Knowledge Graph-Powered Data Catalog"@en ; schema1:publisher sm:modernData101 ; schema1:url ; rdfs:comment "An article explaining how a medallion architecture can publish its Gold layer as an RDF knowledge graph-backed data catalog."@en ; prov:wasGeneratedBy sm:codexDesktopEnvironment, sm:gpt5ChatInterface, sm:kgGeneratorSkill, sm:rdfInfographicSkill, sm:uriBurnerResolver, sm:virtuosoServer . sm:queryExamplesSection a schema1:ArticleSection ; rdfs:label "Executable SPARQL examples"@en ; schema1:about ; schema1:description "SPARQL examples from the article adapted to the generated ontology and instance data."@en ; schema1:hasPart sm:customer-C-001, sm:customer-C-002, sm:customer-C-003, sm:query-active-contract-billing-issues, sm:query-customer-datasets, sm:query-customer-properties, sm:query-source-counts ; schema1:isPartOf sm:article ; schema1:name "Executable SPARQL examples"@en ; rdfs:comment "SPARQL examples from the article adapted to the generated ontology and instance data."@en . sm:glossary a schema1:DefinedTermSet ; rdfs:label "Semantic Medallion glossary"@en ; schema1:description "Defined terms used by the article and generated ontology."@en ; schema1:hasDefinedTerm sm:dcatConcept, sm:goldGraphConcept, sm:iriMintingConcept, sm:knowledgeGraphCatalogConcept, sm:maplibConcept, sm:ottrConcept, sm:provConcept, sm:semanticMedallionConcept ; schema1:name "Semantic Medallion glossary"@en ; rdfs:comment "Defined terms used by the article and generated ontology."@en . sm: a owl:Ontology ; rdfs:label "Semantic Medallion executable catalog ontology"@en ; schema1:description "A lightweight ontology and representative data model for the Semantic Medallion article's DataFrame-to-RDF catalog pattern."@en ; schema1:identifier ; schema1:name "Semantic Medallion executable catalog ontology"@en ; schema1:url ; rdfs:comment "A lightweight ontology and representative data model for the Semantic Medallion article's DataFrame-to-RDF catalog pattern."@en .