URI Policy

URI Policy

Policy Statement

URIs created by York University Digital Library

  • York University Digital Library uses a systematic convention to generate unambiguously unique identification for digital objects within its repository. This convention will create a stable name or reference to an object that can be permanently associated with that object, regardless of future changes to organizational structure or to digital access protocols.
  • This is in conformance with section 4.2.4 of Metrics for Digital Repository Audit and Certification (CCSDS, June 2009) which states that a compliant repository "shall have and use a convention that generates persistent, unique identifiers for all AIPs" and "its components."
  • This convention will ensure that “each AIP can be unambiguously found in the future” and that "each AIP can be distinguished from all other AIPs in the repository"

Implementation

Islandora object

York University Digital Library canonical URIs are consistently constructed in the following manner:

  • /islandora/object/PID

These URIs are aliased using Islandora Pathauto to the following pattern:

  • [fedora:pid]/[fedora:label]

Example:

  • Photograph: New Woodbine : racehorses train for opening of season
  • Canonical URI: http://digital.library.yorku.ca/islandora/object/yul:88675
  • Aliases URL: http://digital.library.yorku.ca/yul-88675/new-woodbine-racehorses-train-opening-season

Islandora object datastream

York University Digital Library object datastream canonical URIs are consistently constructed in the following manner:

  • /islandora/object/PID/datastream/DATASTREAM_NAME/view
  • /islandora/object/PID/datastream/DATASTREAM_NAME/download
  • [fedora:pid]/[fedora:label]/datastream/DATASTREAM_NAME/view
  • [fedora:pid]/[fedora:label]/datastream/DATASTREAM_NAME/download

Example:

  • Photograph: New Woodbine : racehorses train for opening of season
  • Canonical URI: http://digital.library.yorku.ca/islandora/object/yul:88675/datastream/JPG/view
  • Aliases URL: http://digital.library.yorku.ca/yul-88675/new-woodbine-racehorses-train-opening-season/datastream/JPG/download

Publicly available datastream names

Audio:

  • TN (Thumbnail)
  • PROXY_MP3 (Streaming quality MP3)

Book:

  • TN (Thumbnail)
  • ORIGINAL_PDF (Only for Buddhism Across Boundaries: Buddhist Periodicals and Books from Colonial Burma collection )

Images:

  • TN (Thumbnail)
  • JPG (Medium sized JPG)
  • OCR (OCR'd text)

Metadata:

  • MODS (Descriptive metadata)
  • DC (Descriptive metadata)
  • TECHMD_FITS (Technical metadata)
  • RELS-EXT (Fedora Object to Object Relationship)

Video:

  • TN (Thumbnail)
  • MP4 (Streaming quality MP4)

Web ARChive:

  • TN (Thumbnail)
  • JPG (Medium sized JPEG)
  • WARC_CSV (WARC Index)
  • WARC_FILTERED (WARC filtered)
  • OBJ (Warc)

Acknowledgements

Adapted from and inspired by:

License

CC0

CC0 1.0 Universal (CC0 1.0) Public Domain Dedication