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heather-ferrell

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Building A Repository for Digital Objects
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  1. Building A Repository for Digital Objects Allen Mullen Texas State Library & Archives Commission

  2. Overview • Considerations for Developing a Permanent Repository for Digital Objects • Texas State Library’s Electronic Publications Repository project

  3. Background • Publication Repositories vs. other Digital Object projects • Standards in use

  4. Types of Digital Object projects • Records management preservation • Digital image access/preservation projects • Electronic journal access/preservation projects

  5. Government Publication Repositories • National Library of Australia • NEDLIB • National Library of Canada • GPO and U.S. States

  6. Standards and models • Open Archival Information Systems (OAIS) • Document Object Model • Preservation metadata • XML framework

  7. OAIS • NASA developed; proposed ISO standard • Framework for archive architecture; establishes concepts and processes • Processes: Ingest, Data Management, Archival Storage, Access, and Administration • Data object interpreting Representation Information produces Information Object

  8. Document Object Model • W3C Recommendation for an open standard to dynamically access and update documents • Potential for Preservation - work on basis of collections sharing common characteristics

  9. XML Framework • The Platform and The Content must be “persistent” for preservation • Collection context - “infrastructure independent” platform for data exchange • Presentation context - XML based objects for platform independent migration

  10. Preservation Metadata Standards • National Library of Australia, CEDARS, NEDLIB and Library of Congress • facets - descriptive, access, administrative, technical, legal • OCLC/RLG work

  11. Other considerations • Migration or emulation? • Authenticity • Version control • persistent locator

  12. Texas Government Information Repository • Background • Key considerations • Key decisions • Project progress

  13. Repository Background • Migration of Government Publishing • TRAIL and Dublin Core • Print Publication Depository system

  14. Key Considerations • What to collect? • How to collect? • How to process? • How to store? • How to preserve? • How to access?

  15. Challenges of Publication Framework • Multiple formats for publications • Multiple files comprising single publications • Multiple versions of publications • Relative vs. Dynamic linking • Difficult formats

  16. Key Decisions • Collection Development Policy • Manual harvest • Collections-based processing; conversion to XHTML (or other XML) • Archives and redundant depository • Migration or emulation? • Enhanced Dublin Core

  17. Project progress • Research phase completed • RFIs issued and evaluated • Integration of digital images projects • Purchasing/implementation in Autumn 2001 • Integration via Z39.50 • Future work to be done