Publications Office of the EU
About reference data - EU Vocabularies
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Semantic knowledge base

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About reference data

Reference data, such as code lists and authority tables, means data that are used to characterise or relate to other data. Such a controlled vocabulary defines the permissible values to be used in a specific field for example as metadata. Reference data vocabularies are fundamental building blocks of most information systems. Using common interoperable reference data is essential for achieving interoperability.

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reference data vocabularies metadata interoperability thesauri taxonomy ontology controlled vocabularies
Naujausią
About the use of Named Authority Lists (NALs) Penktadienis, 2025, gegužė 23
How to extract a list of concepts from a vocabulary Penktadienis, 2025, gegužė 23
Terms used in our reference data catalogue Penktadienis, 2025, gegužė 23
Dissemination formats Penktadienis, 2025, gegužė 23
useContext property and how to use it Penktadienis, 2025, gegužė 23
Labels and data models, why and how to use them Penktadienis, 2025, gegužė 23
Identifiers and how to use more than one Penktadienis, 2025, gegužė 23
Federated queries Penktadienis, 2025, gegužė 23
Populiariausių
Dissemination formats 57022 Peržiūros
useContext property and how to use it 55469 Peržiūros
Terms used in our reference data catalogue 55246 Peržiūros
Federated queries 55077 Peržiūros
About the use of Named Authority Lists (NALs) 53205 Peržiūros
Labels and data models, why and how to use them 52495 Peržiūros
Identifiers and how to use more than one 50446 Peržiūros
How to extract a list of concepts from a vocabulary 3 Peržiūros
Child Articles (3)
  • Dissemination formats

    Dissemination formats Our reference data catalogue contains more than 150 datasets spanning from simple code lists to taxonomies, schemas and ontologies. Each specific type has its own...

  • Terms used in our reference data catalogue

    Terms used in our reference data catalogue The reference data catalogue published on the Publications Office website is a dynamic set of data models , thesauri and taxonomies that are made...

  • What is a URI

    What is a URI A Uniform Resource Identifier (URI) is a compact sequence of characters that identifies an abstract or physical resource (IETF RFC3986). URIs are specified as being written only in...