|Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact|
|Full name||Formal name: NCBI/NLM Journal Archiving and Interchange Document Type Definition (DTD), versions 2.0 through 2.3. Common name: NLM DTD, version 2.x|
Often referred to as the NLM DTD, the Journal Archiving and Interchange Tag Library was intended as a common format in which publishers and archives can exchange final journal article content. See NCBIArch_1 for a description of the 1.x versions of this format and characteristics of the family of DTDs as a whole. Versions of this DTD with numbers between 2.0 and 2.3 were published by the National Center for Biotechnology Information (NCBI), a division of the National Library of Medicine (NLM) as follows:
See NCBIArch_1 for more information about the structure and characteristics of the family of DTDs as a whole.
|Production phase||Generally used for exchanging works in their final state. A related Publishing DTD (built from the same tag set) is intended as an initial- or middle-state format for authors and publishers.|
|Relationship to other formats|
|Defined via||XML_DTD, XML Document Type Definition (DTD)|
|Has earlier version||NCBIArch_1, NCBI/NLM Journal Archiving and Interchange DTD, version 1.x|
|Has later version||NCBIArch_3, NCBI/NLM Journal Archiving and Interchange DTD, version 3.0|
|LC experience or existing holdings||
|Disclosure||Openly documented. All components of the Journal Archiving and Interchange DTD Suite are in the public domain.|
See NLM Journal Archiving and Interchange Tag Suite | Tag Suite Versions for links to documentation for all versions of the NLM DTD.
For a publisher to update workflows to use a new DTD can be a major undertaking. As of 2016, a substantial number of publishers appear to be using versions 2.x of the NLM DTD. According to information provided by Portico on article submissions in 2016 for its archival service, almost 30 publishers submitted a total of about 450,000 articles in versions 2.x of the Archiving and Interchange DTD, and a similar number of publishers submitted about 300,000 articles in versions 2.x of the Publishing DTD.
|Licensing and patents||No licensing or patent issues. The tag sets are in the public domain.|
|Transparency||Rates highly for transparency. Text content for articles is in XML, and hence viewable in basic editors, web browsers, etc. Elements have understandable tag-names, and document instances are in natural reading order.|
|Self-documentation||The DTD includes a rich set of elements for metadata at the article and journal level. The <article> element is expected to include the article content and full descriptive metadata.|
|Technical protection considerations||None.|
||For textual content files.|
|Magic numbers||See related format.||See NCBIArch_1|