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This document specifies the RDF data model used for the Fennica Linked Data set, which consists of approximately 42 million RDF triples. The data model is heavily based on Schema.org, including the bibliographic extensions. The OCLC WorldCat Linked Data model has been used as a reference whenever possible. The separation between Works and Instances is modelled according to BIBFRAME 2.0.
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URI pattern: http://urn.fi/URN:NBN:fi:bib:me:Wnnnnnnnnnxx
Number of entities: approx. 930 000 Works, of which 450 000 are Series and 270 000 are Periodicals.
The Work entity type represents an abstract creative work, very similar to the BIBFRAME 2.0 notion of Work. Derived works such as translations are modelled as separate Work entities. In FRBR terms, this Work entity is a combination of a FRBR Work and Expression.
The Series entity type is a sub-type of Work and represents a publication series. The sub-type Periodical is used for more formally established series that may have ISSNs and/or a specific sequence of volumes
Instance
URI pattern: http://urn.fi/URN:NBN:fi:bib:me:Innnnnnnnnxx
Number of entities: approx. 1.1 million
The Instance entity type represents a specific edition (e.g. a hardcover book or a specific DVD release of a film) of a Work. It is similar to the BIBFRAME 2.0 notion of Instance. In FRBR terms, it is similar to a FRBR Manifestation.
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Person
URI pattern: http://urn.fi/URN:NBN:fi:bib:me:Snnnnnnnnnxx
The Series entity type represents a publication series. The sub-type Periodical is used for more formally established series that may have ISSNs and/or specific sequence of volumes.
Person
Pnnnnnnnnnxx
Number of entities: approx. 1.3 million. Note that there is a lot of duplication within these entities. TODO: reconcile the Person entities with the person authority file.URI pattern: http://urn.fi/URN:NBN:fi:bib:me:Pnnnnnnnnnxx
The Person entity type represents a human being (e.g. author, contributor or subject of a work).
Organization
URI pattern: http://urn.fi/URN:NBN:fi:bib:me:Onnnnnnnnnxx or blank node or CN identifier (TBD)
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URI pattern: blank nodes only
Number of entities: approx. 1.0 million. Note that there is a lot of duplication within these entities. TODO: reconcile the Place entities with YSO places.
The Place entity type represents a physical place (e.g. a country or a city).
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URI pattern: blank nodes only
Number of entities: approx. 980 000
The PublicationEvent entity type represents the event when an instance of a work was published.
