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Adventures in Digital Asset Management: Fedora at the National Library of Wales

Adventures in Digital Asset Management: Fedora at the National Library of Wales. Glen Robson National Library of Wales gmr@llgc.org.uk. Contents. The National Library of Wales Why the NLW choose Fedora The pilot Theoretical look into preservation Data Models.

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Adventures in Digital Asset Management: Fedora at the National Library of Wales

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  1. Adventures in Digital Asset Management: Fedora at the National Library of Wales Glen Robson National Library of Wales gmr@llgc.org.uk

  2. Contents • The National Library of Wales • Why the NLW choose Fedora • The pilot • Theoretical look into preservation • Data Models

  3. The National Library of Wales • Nature of NLW • Collecting • Variety of data types and formats • Preserving • Obsolescence • Lack of context information • Persistent identifiers • Integration • Access • Open collections

  4. Why we choose Fedora • Comparison with D-Space • Fundamental issues • Suitability for wide range of data types • Suitability for distribution of data types • Support for collection structures • Scalability • `Future-proof’ architecture

  5. The Pilot • Understand the Fedora System • Experiment with different data types • Allow access to Digital Assets • Investigate workflows for moving digital material into the repository

  6. Examples • Ingested Digitised Images • E-Thesis • Ingested web pages • Born Digital Object • Basic authentication and rights management

  7. E-Thesis • Abstract • Word Document Thesis • Original, PDF, Text, HTML and Tiff page images • Video Composition • Original, DivX and Web Viewer

  8. Web Pages • Complex Digital Objects • Arrive in a Compressed File • Dissemination 1 Uncompress tar and serve • Simple • Difficult to migrate formats • Dissemination 2 Extracted and ingested into Fedora • More complicated • Can do format migration without breaking links • HTML converted to XHTML • Meta data can be assigned to each page, image or movie.

  9. Digitised Images • Problems: • Obsolete Formats • Loss of context information • Persistent identifiers and URLs • Integration • Access

  10. Digital Images – Obsolete Formats • What if we move from jpeg to jpeg2000 • Website would have to be updated • All links would break: • http://cairsweb.llgc.org.uk/images/mst/mst00001.jpg • Special Viewer? • Fedora’s Solution • Find all images • Add a disseminator to convert jpg files to jpeg2000 • Links not file specific: • http://teilo:9080/llgc/getImage/getMedium?PID=llgctest1:189 • Record conversion in meta data • History automatically saved

  11. Digital Images – Context information • Fedora’s Solution • Mets Document in object as Data Stream • Version history so changes saved • Can store any type of Meta data: • Mets Rights • PREMIS Preservation Meta data • Could even store the intro page located on the Digital Mirror

  12. Digital Images – Persistent Identifiers • Fedora’s Solution • Data Type independent URLs • http://teilo:9080/llgc/getImage/getMedium?PID=llgctest1:189 • Fedora PID constant even through upgrades • Can add any Identifiers using Fedora relationships • URLs link to Servlets for redirection • GetMedium Servlet2 • Find pid llgctest1:189 • Resize large image Data Stream • Convert to JPEG2000 • Return Image • GetMedium Servlet1 • Find pid llgctest1:189 • Get Mid sized image Data Stream • Convert to JPEG2000 • Return Image

  13. Digital Images - Integration • Existing Digital Content from the Digital Mirror http://teilo:8080/cocoon/METS/MST00001/frames?div=1&subdiv=0&locale=en&mode=thumbnail • Ingest existing Mets documents into Fedora • No change to existing workflow • Ingest images into Fedora • Better preservation • Allow original look and feel to website • One line change to configuration file • Enhanced Version (PDF of Book)

  14. Digital Images - Access • 3 Types • Through Catalogue • Difficult with Geac • New System OAI Harvesting? • By Browsing • Current Digital Mirror • Relationships • View all digitised collection: http://teilo:8080/cocoon/ViewCollection/llgctest1:DigitisedCollection • By searching repository • Ambfish • Indexes Mets Documents

  15. Data Models Object: Fish Book PID: llgctest1:108 DS1.0 Page 1 Large DS2.0 Page 1 Mid DS3.0 Page 2 Large DS4.0 Page 2 Mid DS5.0 Page 2 Large DS6.0 Page 2 Mid DS7.0 MIX Meta for Page 1 DS8.0 MIX Meta for Page 2 DS9.0 MIX Meta for Page 3 DS10.0 METS Document

  16. New Model Object: Fish Book PID: llgctest1:108 DS1.0 Mets Doc Is Part Of Is Part Of Object: Page1 Fish Book PID: llgctest1:109 DS1.0 Image Large DS2.0 Image Mid DS3.0 MIX Meta about DS1.0 Object: Page2 Fish Book PID: llgctest1:110 DS1.0 Image Large DS2.0 Image Mid DS3.0 MIX Meta about DS1.0

  17. Summary • Fedora as DAMs • Fedora Community • Moving towards OAIS and Trusted Digital Repository status

  18. Questions and Answers Glen Robson gmr@llgc.org.uk

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