PREMIS (Preservation Metadata, Data Dictionary Maintenance Activity)
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As a standard for preservation metadata, the PREMIS Data Dictionary for Preservation Metadata is based on a data model that defines the entities that are described (Objects, Events, Agents and Rights), the properties of those entities (semantic units), and relationships between them. 

The PREMIS OWL ontology is an RDF encoding of that data model to provide a Linked Data-friendly data management function for a preservation repository, allowing for SPARQL querying.  It integrates PREMIS information with other Linked Data compliant data sets, such as format registries and controlled vocabularies, allowing interconnections between different repository databases. 

The PREMIS OWL Ontology Revision Working Group has released a draft revised version of the ontology based on version 3, a major update of the PREMIS data model and Data Dictionary. The revision has substantially remodeled it, incorporating emerging Linked Data best practices and connections to other relevant RDF ontologies. The working group encourages people in the preservation, metadata and linked data communities to review and provide comments. The documentation and further information is at:

The first version of the PREMIS OWL ontology was based on the PREMIS Data Dictionary version 2.2.


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