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

Summary

SPARQL

Quality

Passport

Metadata

Files & access

Graphs

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

RDF

text/turtle

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.

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": "2026-07-16T19:24:53.545332+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": "",
          "title": "Download",
          "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": {
        "was_derived_from": "https://dataportal.material-digital.de/dataset/demonstrator",
        "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",
      "checksum_sha256": "fc65e594df2e01cb5998c060de0fd4762d98d8efde6f2a7675b9d7bcd07e3666",
      "size_bytes": 8436,
      "source_uri": "/data/datagraph/state/uploads/demonstrator/graph_b4d93565a990510c/graph_b4d93565a990510c-filtered.ttl",
      "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"
}