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May 2000

Current Thinking on Digital Preservation: Role of Metadata Oya Y. Rieger Coordinator, Library Office of Distributed Learning Cornell University Library oyr1@cornell.edu. May 2000. what is preservation metadata?. Digital Preservation.

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May 2000

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  1. Current Thinking on Digital Preservation:Role of Metadata Oya Y. RiegerCoordinator, Library Office of Distributed LearningCornell University Libraryoyr1@cornell.edu May 2000

  2. what is preservation metadata?

  3. Digital Preservation • Managed activities to ensure continued access to digital materials in the face of rapidly changing technological and organizational elements

  4. stakeholders money staff policies legal system politics networks ORGANIZATION TECHNOLOGY

  5. computer-enforceable human-enforceable Preservation Service: Challenges • Combination of managerial, computational, practical, philosophical issues • Nested configuration of technical infrastructure

  6. file format, compression, encryption, etc. • Integrity • Contextual integrity • Provenance • Usability and references storage medium, file naming, directory structuring, storage conditions, etc. storage media drive, storage management software server: computer, retrieval software, scripts, programs, OS networks distributed protocols, programs, etc. client: computer, software

  7. Preservation Service: Goals • Detect preservation threats and take action • Facilitate preservation administration • Promote preventive measures to reduce risks All roads lead to metadata …

  8. Preservation Metadata • Knowledge-base necessary to support preservation administration • Organizational Strategies • technology management • Technical Strategies: • enduring care, refreshing, migration, emulation, technology preservation, digital archeology .

  9. Preservation Metadata • Extensible metadata • Cover all types of digital objects • Accommodate different technological implementations • Meet needs of different communities

  10. 1. Extensible Metadata life cycle determine manifested in metadata people institutions digital information create and manage

  11. Preservation Metadata • Extensible metadata • Cover all types of digital objects • Accommodate different technological implementations • Meet needs of different communities • Effective metadata • Cost-effective • Just-for-preservation

  12. mismanagement and negligence PRESERVATION METADATA technical and mechanical failures reference context provenance fixity representation digital object operator errors viruses unauthorized and undocumented changes software incompatibility or obsolescence missing programs PRESERVATION POLICIES incomplete metadata 2. Effective Metadata

  13. Current Preservation Metadata Research • Open Archival Information System (OAIS) • Cedars, Pandora, NEDLIB, National Library of the Netherlands • http://ssdoo.gsfc.nasa.gov/nost/isoas/us/overview.html • OCLC/RLG Working Group on Preservation Metadata • NISO Committee on Technical Metadata for Digital Still Images

  14. OAIS Data Management producer Access consumer Ingest Archival Storage Administration management

  15. OAIS Archival Information Package packaging information AIP Preservation Description Information Content Information • Reference Information • Provenance Information • Context Information • Fixity Information • Data Object • Representation Information

  16. Current Preservation Metadata Research • Open Archival Information System (OAIS) • Cedars, Pandora, NEDLIB, National Library of the Netherlands • OCLC/RLG Working Group on Preservation Metadata • http://www.oclc.org/digitalpreservation/ • NISO Committee on Technical Metadata for Digital Still Images • http://www.niso.org/commitau.html

  17. Concluding Thoughts • Focus of preservation metadata is more on “dictionaries” than “functionality” • There is insufficient empirical data on loss and a lack of consensus on “essence” • Librarians, IT specialists, researchers, and archivist are learning to communicate & collaborate • Digital preservation research is getting very trendy … especially “digital asset management” • European and Australian projects are highly coordinated • US projects are very diverse – little coordination but a good level of information sharing • Emphasis on third party certified archives • We cannot preserve everything!

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