Persistent Identifier (PID)
In Research data Management (RDM), the term “persistent identifier (PID)” refers to a permanent digital identifier consisting of alphanumeric characters that is assigned to a data set or other digital object and refers directly to it. By entering the PID in a search engine, interested parties can reliably find the corresponding object in a straightforward manner. In addition, any number of metadata can be linked to the persistent identifier and thus to the associated dataset. read more
Frequently used PID systems are DOI (Digital Object Identifiers), PURL (Persistent Uniform Resource Locators) and URN (Uniform Resource Names). Unlike other serial identifiers (for example URL addresses), a persistent identifier refers to the object itself and not to its storage location or position on the internet. If the storage location of a digital object associated with a persistent identifier changes, the identifier remains the same. Only the URL needs to be changed or added in the identifier database. This ensures that a record remains permanently findable, accessible, and citable.
PIDs are assigned by the editor when publishing a scientific article, for example. In the case of research data, a PID is usually assigned automatically when the data is uploaded to a repository. It is also often possible to reserve PIDs (for example DOIs) in advance. In this way, the identifier can already be mentioned in the document to be uploaded.
In addition to object identifiers, other persistent identifiers play a role in research as well. These are in the first place unique and permanent IDs reserachers (for example ORCID iD) and reserach organizations (for example ROR). They help to refer to the correct researcher and affiliation, regardless of posible name changes and the language used.
Duration: 6:50 mins
Content: The following short video from RWTH Aachen University provides a good introduction to the topic of persistent identifiers (PID). You will learn what PIDs are and how they are used in the context of research data management.
Dominik Schmitz, Daniela Hausen, Ute Trautwein-Bruns (2020): Persistent Identifier (PID). RWTH Aachen University. Available at DOI: 10.18154/RWTH-2019-10059.
License: CC BY 4.0, excepted: avatars/illustrations (Shutterstock’s standard image license)
- DOI-Service Austria: Since January 2020, with the DOI Service Austria, TU Wien Bibliothek has been providing all Austrian universities, research institutions and other non-profit organisations in the research and education sector domiciled in Austria with an attractive opportunity to register and use Digital Object Identifiers (DOIs) to ensure stable retrieval of academic output via the internet.
- ORCID Austria: ORCID Austria is a consortium of interested Austrian research and research funding institutions. A major goal of this consortium is to establish ORCID iD as the primary unique personal identifier for researchers in Austria.
- ROR: The Research Organization Registry (ROR) is a community-led registry of open, sustainable, usable, and unique identifiers for research organizations.