Linked Data is a specific combination of formats and publication channels. RDF (Resource Description Framework) is the overarching linked data format framework, consisting of triples that each represent a ‘property’ or ‘field’ of an object description. The object described is always represented by a persistent identifier URI (PID-URI). The Library supports ARK (e.g. for items in the catalogue), Handle (image repository and scientific output) and DOI (for research datasets).