The DAI links the PICA database in institutional libraries with the METIS national research information system.
The Digital Author Identifier is a unique national number for every author active within a Dutch university, university of applied sciences, or research institute.
In the scientific community, other identifiers are in use as well, such as ORCID, ResearcherID,[1] and ScopusId.
[2] SURFfoundation[3] has, in cooperation with OCLC PICA,[4] created a connection with PICA National Thesaurus Authornames (NTA) that is supplied and maintained by university libraries.
Important to this is the connection between the research information system Metis[5] and the repositories.