Introduction to persistent identifiers
A Persistent IDentifier (PID) is a long-lasting reference to a resource. Often, a PID is associated to a set of metadata describing the object.
In the current scholarly communication environment, two types of PIDs are particularly extended, PIDs for objects (publications, data, software... ) and people (researchers, authors, contributors... ).
You can find a quick description of different identifiers here:
Publications and Data PIDs
External documentation
Persistent identifiers – an overview by Juha Hakala
For a broad overview, read the ANDS Persistent identifiers awareness guide
For an in-depth understanding of PIDs, take a look at The ANDS expert guide to Persistent Identifiers
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