To unequivocally identify datasets in a repository or any digital entities and resources, we use persistent identifiers (PIDs). They reliably point to a digital entity; e.g. ORCID
iD points to a digital resource about a person-researcher. As the name states, these must be persistent – not changing with time. There are authorities responsible to the control over assigning PIDs to digital resources, e.g. Crossref
for scholarly communication. Research organisations PIDs are assigned in ROR
registry. PIDs exist also for a more specific entities, such as chemical compounds (e.g. InChI of IUPAC
). Use these globally-recognised PIDs to clearly identify your metadata. A repository must provide PID (e.g. DOI
of DataCite) for your published dataset.