Digital Object Identifier
phrasePronunciation: /ˈdɪdʒɪtəl ˈɒbdʒekt aɪˈdentɪfaɪər/
Also written as: DOI — Digital Object Identifier
A persistent identifier that provides a permanent link to digital content. DOIs ensure long-term access to scholarly materials even when URLs change.
Full Definition
A Digital Object Identifier (DOI) is a unique, persistent identifier assigned to digital objects, particularly scholarly publications, datasets, and other academic content. DOIs are part of the Handle System and provide a reliable way to cite and locate digital materials over time. Unlike URLs, DOIs remain stable even when content moves to different servers or platforms. Publishers register DOIs through registration agencies like Crossref, and the identifier consists of a prefix identifying the registrant and a suffix identifying the specific object.
Plain English
A special code assigned to online articles and documents that acts like a permanent address, so you can always find them even if they move to a different website.
In Editorial Context
A critical component of editorial workflow that ensures proper citation tracking, metrics collection, and long-term discoverability of published content across platforms and aggregators.
Etymology & History
Developed by the International DOI Foundation to solve the problem of broken links and unstable citations in digital publishing.
Initially focused on commercial publishing but expanded to include datasets, software, and other research objects.
Usage
"All articles in the institutional repository must be assigned digital object identifiers to ensure persistent access and proper citation tracking."
Usage note: Always formatted as 'doi:' or 'https://doi.org/' followed by the identifier; case-insensitive but conventionally lowercase.
Context: scholarly publishing, digital libraries, citation management
Region: international
Style guide notes: Chicago Manual recommends displaying DOI as URL (https://doi.org/), APA requires DOI for journal articles when available, no period after DOI in references
In Context
- "The library's institutional repository assigns DOIs to faculty publications to ensure permanent access."
- "When cataloging electronic resources, staff must verify DOI accuracy in the metadata record."
- "The digital collections team recommends DOI registration for all peer-reviewed institutional publications."
Also known as
Contrasted with
Don't confuse with
URLs point to current locations while DOIs provide persistent identification that can resolve to changing URLs.
Common mistake: Confusing DOI with URL, not understanding DOI persistence, incorrectly formatting DOI citations, assuming all digital content has DOIs
Related Terms
Broader term: persistent identifier
Frequently Asked Questions
What is the difference between a DOI and a URL?
A DOI is a persistent identifier that remains constant even if the content location changes, while URLs can break when content moves to new servers or domains.
Do all digital library resources have DOIs?
No, DOIs are primarily assigned to scholarly publications, datasets, and formal digital objects. Many library digital collections use other identifier systems.
How should DOIs be displayed in academic citations?
Current standards recommend displaying DOIs as clickable URLs using the format https://doi.org/[DOI number] without a period at the end.
Why Test Candidates on This?
Essential for cataloging digital resources, managing institutional repositories, and ensuring proper citation formatting in academic libraries
Required skill level: Mid