Sustainability of Digital Formats: Planning for Library of Congress Collections
Sustainability of Digital Formats: Planning for Library of Congress Collections |
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Formal name: NCBI/NLM Journal Archiving and Interchange Document Type Definition (DTD), version 3.0. Common name: NLM DTD, version 3.0 |
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| Description |
Version 3.0 of the Archiving and Interchange DTD was released by the National Center for Biotechnology Information (NCBI), a division of the National Library of Medicine (NLM) on November 21, 2008. 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 early versions of this format and characteristics of the family of DTDs as a whole. Version 3.0 is a non-backward compatible release of the NLM Journal Archiving and Interchange Tag Suite. The changes in version 3.0 reflect requests made by users and improvements identified as necessary for the Tag Suite's future usability. Major categories of changes included: some elements were renamed to make the naming more consistent throughout the tag set; markup for some aspects of the article models that had proved confusing or hard to use correctly was adjusted; and some wrapper elements were added to keep related-material together. See Change Report: Version 3.0 for more details. 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 | |
| Has later version | JATS_1, JATS, Journal Article Tag Suite, NISO Z39.96, versions 1.x |
| Has earlier version | NCBIArch_2, NCBI/NLM Journal Archiving and Interchange DTD, versions 2.x |
| Has earlier version | NCBIArch_1, NCBI/NLM Journal Archiving and Interchange DTD, versions 1.x |
| Defined via | XML_DTD, XML Document Type Definition (DTD) |
| LC experience or existing holdings |
See NCBIArch_1 |
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| LC preference |
See NCBIArch_1 |
| Disclosure | Openly documented. All components of the Journal Archiving and Interchange DTD Suite are in the public domain. |
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| Documentation |
See NLM Journal Archiving and Interchange Tag Suite | Tag Suite Versions for links to documentation for all versions of the NLM DTD. |
| Adoption |
The NLM DTD and its successor, JATS, are used by a number of scholarly publishers when submitting articles marked up in XML to an external archive. According to information provided by Portico on article submissions in 2016 for its archival service, 40 publishers submitted a total of over one million articles in version 3.0 of the Archiving and Interchange DTD, and 9 publishers submitted about 120,000 articles in version 3.0 of the Publishing DTD. More publishers used versions 2.x but for fewer articles. The British Library allows journal publishers to deposit copies to the Legal Deposit Libraries by submitting content to Portico and authorizing Portico to transmit a copy to the British Library. For this purpose, the British Library has chosen version 3.0 of the NLM DTD as the format for Portico to use for such transmissions. |
| 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. |
| External dependencies | None. |
| Technical protection considerations | None. |
| Text | |
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| Normal rendering |
See NCBIArch_1 |
| Tag | Value | Note |
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| Filename extension | xml |
For textual content files. |
| Magic numbers | See related format. | See NCBIArch_1 |
| General |
See NCBIArch_1 |
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| History |
See NCBIArch_1 |
See NCBIArch_1.
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