A Digital Object Identifier (DOI) is a unique and permanent digital identifier for digital objects, such as publications, data sets or digital offers on the Internet. A DOI enables permanent and unambiguous access to digital objects. In this way, scientific results can be cited reliably and in a standardized form.
Benefits of DOI registration
A DOI registration
- makes objects clearly referenceable and more easily accessible,
- makes it easier to cite and link the objects to a publication,
- is the standard in science for the publication of scientific articles,
- improves access to scientific data and thus avoids duplications.
- makes digital objects such as scientific films and film segments quotable as easily as texts.
- increases the visibility of research data, motivates new research and promotes scientific collaboration,
Structure of a DOI
A DOI consists of up to three parts, the prefix, the suffix and an optional private part.
- The prefix is given and represents the unique identifier of the institution, for the UHH this is 10.25592.
- The suffix is a freely selectable part of the DOI, such as a serial number or an acronym, e.g. uhhfdm.1234.
- The optional private part is attached to the DOI with a hashtag, e.g. #min15 and can then be evaluated by a website or application and used as a jump label. The example #min15 could jump to minute 15 in a movie.
Put together, the DOI looks like this: 10.25592/uhhfdm.1234#min15
To call up a DOI in the web browser, https://doi.org/ must be prefixed in the browser line.
How does a DOI work?
The DOI is stored in a database together with metadata (e.g. authors, title, year, etc.) and the web address (URL) of the website that is to be called up when the DOI is entered in the web browser. The DOI is therefore a permanent link to a web address. This web address and the metadata can be changed. However, the DOI regulations do not allow the linked data or documents to be changed; if there is a new version, a new DOI must be created.
Changes to the stored web address do not take place automatically! These must be communicated to the DOI registration office and entered in the DOI database.
Where can I get a DOI?
There are several options for registering a DOI:
- In the case of publisher publications, the DOI is usually assigned by the publisher.
- If you save research data or documents in the research data repository of the UHH , you will also automatically receive a DOI. This usually also applies if you save research data or documents in other repositories on the Internet (e.g. zenodo.org, Gesis).
- Do you need a DOI for other purposes, e.g. the publication of an electronic journal or a web application, please send an email to firstname.lastname@example.org. (forschungsdaten"AT"uni-hamburg.de) The basic requirement for the Allocation of a DOI represents a long-term available web address.