Dataset

demonstrator

demonstrator is a MatPortal dataset catalogue entry listed under KupferDigital, catalogued under the KupferDigital project. It includes 4 linked resources with formats such as text/turtle, application/octet-stream, SPARQL, turtle, including RDF, sparql. Review the linked source for license and reuse conditions. The original short source note was: demonstrator. It is published in MatPortal by admin for dataset discovery, linked-data browsing, and assistant/RAG indexing.

Project: KupferDigital
Published by admin
Back to browse RDF metadata

4

Files & access

1

Graphs

74

RDF resources

57%

Quality

Dataset identity

Stable URI
https://datagraph.dev.matportal.org/id/dataset/demonstrator Open
Portal page
/datasets/demonstrator Open
RDF Turtle
https://datagraph.dev.matportal.org/data/dataset/demonstrator.ttl Open
License
Reuse license not specified
Publisher
InfAI
Published by
admin
Project
KupferDigital
Version
Not specified
Identifier
716252e8-9082-40f1-b34a-0cd4ecabbbc4

Use this dataset

To work with this dataset in scripts or Jupyter notebooks, copy the public RDF Turtle URL or use the SPARQL query template below.

RDF URL
https://datagraph.dev.matportal.org/data/dataset/demonstrator.ttl
Named Graph
https://datagraph.dev.matportal.org/id/graph/demonstrator/filtered-1984b049

SPARQL query template

SELECT ?s ?p ?o WHERE {
  VALUES ?g { <https://datagraph.dev.matportal.org/id/graph/demonstrator/filtered-1984b049> }
  GRAPH ?g { ?s ?p ?o }
}
LIMIT 100
Open in SPARQL workbench

Related ontologies and catalogue context

No categories, slices, or related ontology links have been published for this dataset yet.

Files & access

4 file/access items
Open file/access URL

sparql

Public file, distribution, or access URL

application/octet-stream
Open file/access URL

SPARQL

Public file, distribution, or access URL

SPARQL
application/sparql-results+xml
Open file/access URL

RDF

Public file, distribution, or access URL

turtle
text/turtle
Open file/access URL

File preview

Preview metadata is available, but no preview rows were returned.

Named graphs

Query this data
Graph URI Status Triples RDF resources
https://datagraph.dev.matportal.org/id/graph/demonstrator/filtered-1984b049 published 156 74

RDF resources

mapping-column.csv

RDF resource

Open resource

mapping-filter-classes.csv

RDF resource

Open resource

mapping-filter-pupils.csv

RDF resource

Open resource

mapping-headers.csv

RDF resource

Open resource

mapping-iri.csv

RDF resource

Open resource

mapping-many-rows-classes.csv

RDF resource

Open resource

mapping-many-rows-pupils.csv

RDF resource

Open resource

mapping-two-mappings-classes.csv

RDF resource

Open resource

mapping-two-mappings-pupils.csv

RDF resource

Open resource

mapping-two-sources-1.csv

RDF resource

Open resource

mapping-two-sources-2.csv

RDF resource

Open resource

mapping-two-targets.csv

RDF resource

Open resource

Ask this dataset with GraphRAG

GraphRAG searches MatPortal's public dataset metadata, named graph metadata, indexed RDF resources, and facts. It does not copy or vectorize every external file or raw distribution.

Clear

Ask a question above to get a graph-aware answer and a safe SPARQL starting point.

Indexed sources

  • Dataset Metadata
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Named Graph

Query this dataset

Use the guarded public SPARQL workbench with a dataset graph template. Only read-only SELECT queries with limits are accepted.

SELECT ?s ?p ?o WHERE {
  VALUES ?g { <https://datagraph.dev.matportal.org/id/graph/demonstrator/filtered-1984b049> }
  GRAPH ?g { ?s ?p ?o }
}
LIMIT 100
Open in SPARQL workbench

Graph-aware Q&A readiness

  • Dataset Metadata
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Named Graph

Dataset quality and readiness

Score
57%
Maturity
draft_metadata
Publication boundary
Public output is derived from reviewed public dataset/resource/graph metadata only.

Checks and recommendations

  • Core metadata completeness
  • Persistent identifier and citation readiness
  • License availability
  • File, service, or access-resource links
  • Ontology and linked-data context
  • Unit and quantity-kind validation
  • Governance and review state

Dataset FAIR assessment

FAIR assessment is not available yet.

Unit profile

{
  "valid": true,
  "score": 1.0,
  "checked_fields": [],
  "issues": [],
  "profile": "matportal-materials-qudt-lite-v1"
}

Semantic dataset passport

Passport ID
demonstrator
DCAT
https://datagraph.dev.matportal.org/id/dataset/demonstrator
Review status
published

Semantic mirror manifest

{
  "@context": {
    "dcterms": "http://purl.org/dc/terms/",
    "dcat": "http://www.w3.org/ns/dcat#",
    "prov": "http://www.w3.org/ns/prov#",
    "matportal": "https://w3id.org/matportal/schema#"
  },
  "id": "https://datagraph.dev.matportal.org/api/v1/datasets/demonstrator/mirror-package",
  "type": "matportal:SemanticMirrorPackage",
  "dataset": "https://datagraph.dev.matportal.org/datasets/demonstrator",
  "dataset_slug": "demonstrator",
  "generated_at": "2026-07-16T19:19:10.182871+00:00",
  "raw_data_policy": "linked-only; no raw data copied by this package",
  "publication_boundary": "review artefact; downstream data-space publication remains governed",
  "contains": [
    "dcat-jsonld",
    "datacite-style-metadata",
    "ro-crate-metadata",
    "ckan-package-json",
    "edc-asset-json",
    "aas-submodel-semantic-ids",
    "sssom-mapping-snapshot",
    "shacl-shape-scaffold",
    "review-record"
  ],
  "counts": {
    "resources": 4,
    "graphs": 1,
    "indexed_entities": 74,
    "mappings": 0,
    "unit_fields_checked": 0
  },
  "source_authority": "MatPortal dataset metadata and linked external providers remain authoritative; connector cards preserve source links."
}

Material identity crosswalk

No public material identity crosswalk entries are linked to this dataset yet.

Machine access

Raw public metadata

{
  "id": "dataset_abe2122cd1e942eb",
  "slug": "demonstrator",
  "title": "demonstrator",
  "description": "demonstrator is a MatPortal dataset catalogue entry listed under KupferDigital, catalogued under the KupferDigital project. It includes 4 linked resources with formats such as text/turtle, application/octet-stream, SPARQL, turtle, including RDF, sparql. Review the linked source for license and reuse conditions. The original short source note was: demonstrator. It is published in MatPortal by admin for dataset discovery, linked-data browsing, and assistant/RAG indexing.",
  "license": "",
  "creators": [],
  "organization": "KupferDigital",
  "project": "KupferDigital",
  "published_by": "admin",
  "groups": [],
  "keywords": [],
  "tags": [],
  "visibility": "public",
  "status": "published",
  "ontology_annotations": [],
  "distributions": [
    {
      "title": "RDF",
      "filename": "filtered.ttl",
      "description": "RDF",
      "visibility": "public",
      "status": "published",
      "media_type": "text/turtle",
      "format": "text/turtle",
      "checksum_sha256": "",
      "size_bytes": 8438,
      "source_uri": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/1371c3a0-0023-4508-a98b-ed1d2d9c2ea0/download/filtered.ttl",
      "download_url": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/1371c3a0-0023-4508-a98b-ed1d2d9c2ea0/download/filtered.ttl",
      "access_url": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/1371c3a0-0023-4508-a98b-ed1d2d9c2ea0/download/filtered.ttl",
      "uri": "https://datagraph.dev.matportal.org/id/distribution/demonstrator/resource_81d34bde2e77c85e",
      "url_type": "external",
      "rdf_format": null,
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "",
          "title": "RDF preview",
          "view_type": "rdf",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {
            "mode": "rdf-preview"
          }
        },
        {
          "id": "",
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          "view_type": "download",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {}
        },
        {
          "id": "",
          "title": "Create Mapping",
          "view_type": "mapping",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": false,
          "config": {
            "workflow": "ontology-field-mapping"
          }
        },
        {
          "id": "",
          "title": "Query",
          "view_type": "sparql",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": false,
          "config": {
            "workflow": "guarded-sparql"
          }
        }
      ],
      "datastore_active": false,
      "datastore_enabled": false,
      "has_views": true,
      "mapping_supported": true,
      "query_supported": true,
      "transform_provenance": {
        "was_derived_from": "https://dataportal.material-digital.de/dataset/demonstrator",
        "harvested_from": "https://dataportal.material-digital.de/",
        "source_resource_id": "1984b049-9730-4441-8500-ecafa80c8826"
      },
      "id": "resource_81d34bde2e77c85e",
      "dataset_slug": "demonstrator",
      "created_at": "2026-06-14T01:24:34.401802Z",
      "updated_at": "2026-06-14T01:24:34.401802Z"
    },
    {
      "title": "sparql",
      "filename": "sparql",
      "description": "",
      "visibility": "public",
      "status": "published",
      "media_type": "application/octet-stream",
      "format": "",
      "checksum_sha256": "",
      "size_bytes": 54710,
      "source_uri": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/f3d1fd27-76c1-4d4c-9603-652adecbd9d0/download/sparql",
      "download_url": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/f3d1fd27-76c1-4d4c-9603-652adecbd9d0/download/sparql",
      "access_url": "https://ckan.kupferdigital.org/dataset/716252e8-9082-40f1-b34a-0cd4ecabbbc4/resource/f3d1fd27-76c1-4d4c-9603-652adecbd9d0/download/sparql",
      "uri": "https://datagraph.dev.matportal.org/id/distribution/demonstrator/resource_3c1e7e0506c174cc",
      "url_type": "external",
      "rdf_format": null,
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "",
          "title": "Download",
          "view_type": "download",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {}
        }
      ],
      "datastore_active": false,
      "datastore_enabled": false,
      "has_views": true,
      "mapping_supported": false,
      "query_supported": false,
      "transform_provenance": {
        "was_derived_from": "https://dataportal.material-digital.de/dataset/demonstrator",
        "harvested_from": "https://dataportal.material-digital.de/",
        "source_resource_id": "152412ff-5281-41dc-866b-581a2a376e99"
      },
      "id": "resource_3c1e7e0506c174cc",
      "dataset_slug": "demonstrator",
      "created_at": "2026-06-14T01:24:34.416746Z",
      "updated_at": "2026-06-14T01:24:34.416746Z"
    },
    {
      "title": "SPARQL",
      "filename": "sparql",
      "description": "",
      "visibility": "public",
      "status": "published",
      "media_type": "application/sparql-results+xml",
      "format": "SPARQL",
      "checksum_sha256": "",
      "size_bytes": 0,
      "source_uri": "https://dataportal.material-digital.de/dataset/4872d49c-2a0e-48c3-a317-5ddead07f604/fuseki/$/sparql",
      "download_url": "https://dataportal.material-digital.de/dataset/4872d49c-2a0e-48c3-a317-5ddead07f604/fuseki/$/sparql",
      "access_url": "https://dataportal.material-digital.de/dataset/4872d49c-2a0e-48c3-a317-5ddead07f604/fuseki/$/sparql",
      "uri": "https://datagraph.dev.matportal.org/id/distribution/demonstrator/resource_cccd8d040df3042f",
      "url_type": "external",
      "rdf_format": null,
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "",
          "title": "Download",
          "view_type": "download",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {}
        }
      ],
      "datastore_active": false,
      "datastore_enabled": false,
      "has_views": true,
      "mapping_supported": false,
      "query_supported": false,
      "transform_provenance": {
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        "harvested_from": "https://dataportal.material-digital.de/",
        "source_resource_id": "a55828c1-aa5c-44fa-9dc6-d71e8d038b80"
      },
      "id": "resource_cccd8d040df3042f",
      "dataset_slug": "demonstrator",
      "created_at": "2026-06-14T01:24:34.431800Z",
      "updated_at": "2026-06-14T01:24:34.431800Z"
    },
    {
      "title": "RDF",
      "filename": "filtered.ttl",
      "description": "",
      "visibility": "public",
      "status": "published",
      "media_type": "text/turtle",
      "format": "turtle",
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      "download_url": "https://datagraph.dev.matportal.org/data/distribution/demonstrator/resource_116d9eb846a5b194.ttl",
      "access_url": "https://datagraph.dev.matportal.org/data/distribution/demonstrator/resource_116d9eb846a5b194.ttl",
      "uri": "https://datagraph.dev.matportal.org/id/distribution/demonstrator/resource_116d9eb846a5b194",
      "url_type": "upload",
      "rdf_format": "turtle",
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "resource_116d9eb846a5b194-rdf",
          "title": "RDF graph",
          "view_type": "rdf",
          "url": "https://datagraph.dev.matportal.org/data/distribution/demonstrator/resource_116d9eb846a5b194.ttl",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": false,
          "config": {}
        },
        {
          "id": "resource_116d9eb846a5b194-sparql",
          "title": "SPARQL",
          "view_type": "sparql",
          "url": "/datasets/demonstrator/sparql",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": false,
          "config": {}
        }
      ],
      "datastore_active": false,
      "datastore_enabled": false,
      "has_views": true,
      "mapping_supported": false,
      "query_supported": false,
      "transform_provenance": {
        "was_generated_by": "native-rdf-ingest",
        "graph_id": "graph_b4d93565a990510c"
      },
      "id": "resource_116d9eb846a5b194",
      "dataset_slug": "demonstrator",
      "created_at": "2026-06-14T01:29:51.662912Z",
      "updated_at": "2026-06-14T01:29:51.662916Z"
    }
  ],
  "graph_ids": [
    "graph_b4d93565a990510c"
  ],
  "entity_count": 74,
  "follower_count": 0,
  "contact_points": [],
  "publisher": "InfAI",
  "homepage": "https://dataportal.material-digital.de/dataset/demonstrator",
  "landing_page": "https://dataportal.material-digital.de/dataset/demonstrator",
  "release_date": "2023-11-08T09:32:55.312660",
  "modification_date": "2026-03-04T10:52:33.928519",
  "version": "",
  "version_notes": "",
  "identifier": "716252e8-9082-40f1-b34a-0cd4ecabbbc4",
  "frequency": "",
  "provenance": "Harvested from Platform MaterialDigital CKAN Action API without credentials. ",
  "dataset_type": "dataset",
  "temporal_coverage": [],
  "temporal_resolution": "",
  "spatial_coverage": [],
  "spatial_resolution_meters": null,
  "access_rights": "",
  "other_identifiers": [],
  "theme": [],
  "language": [],
  "documentation": [
    "https://dataportal.material-digital.de/dataset/demonstrator"
  ],
  "conforms_to": [],
  "is_referenced_by": [],
  "applicable_legislation": [],
  "has_version": [],
  "qualified_relations": [],
  "citation": "",
  "activity": [
    {
      "at": "2026-06-14T01:24:34.387943+00:00",
      "event": "dataset_created",
      "actor": "admin",
      "note": "Dataset registered in native DataGraph"
    },
    {
      "at": "2026-06-14T01:24:34.394319+00:00",
      "event": "dataset_imported",
      "actor": "admin",
      "note": "Imported/updated from Platform MaterialDigital CKAN API."
    },
    {
      "at": "2026-06-14T01:24:34.401802+00:00",
      "event": "resource_added",
      "actor": "admin",
      "resource_id": "resource_81d34bde2e77c85e",
      "note": "RDF"
    },
    {
      "at": "2026-06-14T01:24:34.416746+00:00",
      "event": "resource_added",
      "actor": "admin",
      "resource_id": "resource_3c1e7e0506c174cc",
      "note": "sparql"
    },
    {
      "at": "2026-06-14T01:24:34.431800+00:00",
      "event": "resource_added",
      "actor": "admin",
      "resource_id": "resource_cccd8d040df3042f",
      "note": "SPARQL"
    }
  ],
  "metadata": {
    "publisher": "",
    "published_by": "admin",
    "contact_points": [],
    "homepage": "",
    "landing_page": "",
    "release_date": "",
    "modification_date": "",
    "version": "",
    "version_notes": "",
    "identifier": "",
    "frequency": "",
    "provenance": "",
    "type": "",
    "temporal_coverage": "",
    "temporal_resolution": "",
    "spatial_coverage": "",
    "spatial_resolution_meters": "",
    "access_rights": "",
    "language": [],
    "documentation": [],
    "conforms_to": [],
    "is_referenced_by": [],
    "applicable_legislation": [],
    "has_version": [],
    "qualified_relation": [],
    "qualified_attribution": [],
    "extras": {}
  },
  "created_at": "2026-06-14T01:24:34.387943Z",
  "updated_at": "2026-06-14T01:29:54.614519Z"
}