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Metadata for preservation: the Cedars perspective Michael Day UKOLN: UK Office for Library and Information Networking University of Bath

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Presentation on theme: "Metadata for preservation: the Cedars perspective Michael Day UKOLN: UK Office for Library and Information Networking University of Bath"— Presentation transcript:

1 Metadata for preservation: the Cedars perspective Michael Day UKOLN: UK Office for Library and Information Networking University of Bath http://www.ukoln.ac.uk/ m.day@ukoln.ac.uk Third Metadata Workshop, Luxembourg, 12 April 1999

2 2 Presentation Outline Digital preservation issues The Cedars project Preservation metadata initiatives OAIS - an ISO reference model for an Open Archival Information System

3 Third Metadata Workshop, Luxembourg, 12 April 1999 3 Digital preservation (1) Preservation: –All strategic considerations relating to the survival of library and archive materials and the information contained in them However: –A growing reliance upon digital information resources - both surrogates and information 'born digital' –No formal mechanisms ensure that digital resources are preserved for long-term use –No universal legal-deposit for digital (networked) publications

4 Third Metadata Workshop, Luxembourg, 12 April 1999 4 Digital preservation (2) A definition: "... the planning, resource allocation, and application of preservation methods and technologies necessary to ensure that digital information of continuing value remains accessible and usable." Margaret Hedstrom (University of Michigan) From:Digital preservation: a time bomb for digital libraries. Computers and the Humanities, 31, 1998, pp. 189-202.

5 Third Metadata Workshop, Luxembourg, 12 April 1999 5 CPA/RLG Task Force Task Force on the Archiving of Digital Information Report published May 1996 Commissioned by the Commission on Preservation and Access (CPA) and the Research Libraries Group (RLG) Report was a sign that the digital preservation problem was being taken seriously at the highest levels

6 Third Metadata Workshop, Luxembourg, 12 April 1999 6 UK responses JISC/BL/NPO –Warwick strategy workshops (1995, 1999) –Digital Archiving Working Group Arts and Humanities Data Service –Strategic Policy Framework (July 1998) Public Record Office –Electronic Records in Office Systems (EROS) –National Digital Archive of Datasets (NDAD) Consortium of University Research Libraries –Cedars project (JISC eLib)

7 Third Metadata Workshop, Luxembourg, 12 April 1999 7 Cedars - CURL exemplars in digital archives

8 Third Metadata Workshop, Luxembourg, 12 April 1999 8 The Cedars project The Consortium of University Research Libraries (CURL) interested in the roles and responsibilities of research libraries JISC eLib Phase 3 - Hybrid Libraries, Large Scale Resource Discovery and Digital Preservation Cedars project funded by JISC through the CURL Libraries from April 1998 for 3 years

9 Third Metadata Workshop, Luxembourg, 12 April 1999 9 Cedars project partners Project led by universities of Cambridge, Leeds and Oxford Collaboration with: –Arts and Humanities Data Service –Research Libraries Group –British Library –National Preservation Office –UKOLN –Publishers –etc.

10 Third Metadata Workshop, Luxembourg, 12 April 1999 10 Cedars project objectives To promote awareness To identify and disseminate appropriate strategies for collection management appropriate strategies for long-term preservation Based on a realistic sampling of current digital resource collections

11 Third Metadata Workshop, Luxembourg, 12 April 1999 11 Cedars metadata report AIW01: Metadata for preservation Identified and described relevant projects and associated issues (August 1998) Foundation for metadata implementation within the Cedars project http://www.ukoln.ac.uk/metadata/cedars/ AIW01.html

12 Third Metadata Workshop, Luxembourg, 12 April 1999 12 Four metadata roles 1. Technical metadata –Recording technical details about the original hardware and software environment to support preservation strategies (emulation, migration, post hoc rescue, etc.) 2. Rights management metadata –Recording intellectual property rights ownership, deposit agreements, access agreements, etc. 3. Intellectual preservation metadata –Preserving the integrity and authenticity of digital resources (context and cryptography) 4. Resource discovery metadata

13 Third Metadata Workshop, Luxembourg, 12 April 1999 13 Metadata initiatives Digital Rosetta Stone (DRS) model Pittsburgh University –Functional Requirements for Evidence in Recordkeeping University of British Columbia –The Preservation of the Integrity of Electronic Records National Library of Australia –PANDORA project –Digital Services Project

14 Third Metadata Workshop, Luxembourg, 12 April 1999 14 RLG Working Group RLG Working Group on the Preservation Issues of Metadata Report published May 1998 Limited to a consideration of data elements that describe digital image files Sixteen metadata elements Three experimental implementations: extended Dublin Core, USMARC and XML

15 Third Metadata Workshop, Luxembourg, 12 April 1999 15 The OAIS model (1) Open Archival Information System (OAIS) ISO initiative Co-ordinated by the Consultative Committee for Space Data Systems (CCSDS) An OAIS is defined as an:... Archive that has accepted the responsibility to preserve information and make it available for one or more Designated Communities

16 Third Metadata Workshop, Luxembourg, 12 April 1999 16 The OAIS model (2) The reference model: establishes a common framework of terms and concepts which comprise an Open Archival Information System - from the Foreword Facilitates the description and comparison of archives A basis for further standardisation A basis for conformance

17 Third Metadata Workshop, Luxembourg, 12 April 1999 17 OAIS functional model Administration Ingest Archival Storage Access Data Management Descriptive info. AIP PRODUCERPRODUCER CONSUMERCONSUMER SIP DIP MANAGEMENT requests other info. Descriptive info.

18 Third Metadata Workshop, Luxembourg, 12 April 1999 18 Information Packages (1) The OAIS reference model defines a generic Information Package Further subdivided into: Submission Information Package (SIP) -used by the producer Archival Information Package (AIP) - used internally Dissemination Information Package (DIP) - used by the consumer

19 Third Metadata Workshop, Luxembourg, 12 April 1999 19 Information Packages (2) An Archival Information Package (AIP) comprises two separate objects: Content Information –The information that is the primary object of preservation. Containing a Digital Object and any Representation Information (technical metadata) needed to transform this object into meaningful information Preservation Description Information –other metadata which will allow the understanding of the Content Information over an indefinite period of time

20 Third Metadata Workshop, Luxembourg, 12 April 1999 20 Information Packages (3) Package Descriptor Archival Information Package Packaging Information Content Information Preservation Description Information Derived from Delimited by identifies Further described by

21 Third Metadata Workshop, Luxembourg, 12 April 1999 21 Preservation Description Information (PDI) Preservation Description Information Reference Information Provenance Information Context Information Fixity Information

22 Third Metadata Workshop, Luxembourg, 12 April 1999 22 Packaging Information Content Information Descriptive Information about Package 1 Preservation Description Information (PDI) Packaging Information Package 1

23 Third Metadata Workshop, Luxembourg, 12 April 1999 23 Conclusions Digital Preservation is increasingly becoming an important issue for libraries, archives and other organisations The creation and maintenance of relevant metadata can contribute to the solving of some digital preservation problems The OAIS reference model provides a common framework of terms and concepts

24 Third Metadata Workshop, Luxembourg, 12 April 1999 24 Relevant Web pages UKOLN Metadata Web pages: http://www.ukoln.ac.uk/metadata/ Cedars Web pages: http://www.leeds.ac.uk/cedars/ OAIS reference model: http://ssdoo.gsfc.nasa.gov/nost/isoas/ ref_model.html

25 Third Metadata Workshop, Luxembourg, 12 April 1999 25 UKOLN UKOLN is funded by the Library and Information Commission (formerly the British Library Research and Innovation Centre), the Joint Information Systems Committee (JISC) of the UK Higher Education Funding Councils, as well as by project funding from the JISCs Electronic Libraries (eLib) Programme and the European Union. UKOLN also receives support from the University of Bath, where it is based. http://www.ukoln.ac.uk/


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