# baseURI: https://www.archives.gov/files/lod/dpframework/id/NF00901

@prefix : <https://www.archives.gov/files/lod/dpframework/schema> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix nara: <https://www.archives.gov/data/lod/dpframework/def/> .
@prefix naraid: <https://www.archives.gov/data/lod/dpframework/id/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix wikidata: <http://www.wikidata.org/entity/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

naraid:NF00901
  a nara:FileFormat ;
  dcterms:description "Portable Document Format/Archiving (PDF/A) is a sub-format of PDF, intended for long-term preservation. PDF is a file format that represents formatted, page-based documents. PDF was developed by Adobe, based in part on the imaging model of the PostScript language, to enable the exchange and viewing of documents in a platform-independent manner. PDF/A has constraints that don’t apply to standard PDF files. Some requirements vary depending on the PDF/A profile (conformance level), but some that are applicable to all PDF/A include no encryption and fonts must be embedded. PDF/A-4 was published in 2020 and is based on PDF 2.0. PDF/A-4 is standardized as ISO 19005-4 and is actively maintained. It deprecated some components from the PDF/A-2 and PDF/A-3 specifications that had since been incorporated into the PDF 2.0 specification. PDF/A-4 supports two conformance levels: PDF/A-4e for engineering and PDF/A-4f for embedded files. PDF/A-4e is defined in Annex B of ISO 19005-4 and supports interactive 3D models for engineering workflows. It is considered the successor format to PDF/Engineering (PDF/E-1). PDF/A-4 is widely supported, actively maintained, and has a published open specification, therefore NARA recommends retaining PDF/A-4e as-is, but also extracting any embedded files." ;
  dcterms:identifier "NF00901" ;
  rdfs:label "NF00901" ;
  wikidata:p1163 "application/pdf" ;
  wikidata:p1195 "pdf" ;
  wikidata:p2748 "https://pronom.nationalarchives.gov.uk/fmt/1911" ;
  wikidata:p3266 "https://www.loc.gov/preservation/digital/formats/fdd/fdd000651.shtml" ;
  wikidata:p3381 "http://fileformats.archiveteam.org/wiki/PDF" ;
  wikidata:p973 "https://docs.fileformat.com/pdf/a/" ;
  wikidata:p973 "https://en.wikipedia.org/wiki/PDF/A" ;
  wikidata:p973 "https://forensics.wiki/pdf/" ;
  wikidata:p973 "https://www.iso.org/standard/71832.html" ;
  wikidata:p973 "https://www.wikidata.org/wiki/Q123594858" ;
  nara:category naraid:DesignVector ;
  nara:formatName "Portable Document Format/Archiving for Engineering (PDF/A-4e)" ;
  nara:preservationAction naraid:Retain ;
  nara:preservationPlan "Retain but extract files from the container" ;
  nara:riskLevel naraid:Low ;
  nara:tools "Adobe Acrobat Pro" ;
.
<https://www.archives.gov/files/lod/dpframework/id/NF00901>
  a owl:Ontology ;
.