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Digital preservation


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one day seminar on “CONVERGENCE OF ICTs In LIBRARIES” organized by Kapila Khandvala College of Education on 24th April 2008

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Digital preservation

  1. 1. Digital Preservation Dr. Sarika Sawant SHPT School Of Library Science SNDT Women’s University
  2. 2. SHPT School of Library Science What is Digital document preservation Digital document preservation is a process by which digital data is preserved in digital form in order to ensure the  usability,  durability and  intellectual integrity of the information contained therein
  3. 3. SHPT School of Library Science Need for digital preservation  Vast amount of ‘born-digital’ data, especially in science and engineering  Physical deterioration: medium is vulnerable to deterioration and catastrophic loss.  Digital obsolescence: Digital technology is on a fast track
  4. 4. SHPT School of Library Science Digital preservation: issues  data is maintained in the repository without being damaged, lost or maliciously altered;  data can be found, extracted and served to a user;  data can be interpreted and understood by the user; and  the above can be achieved in the long term.
  5. 5. SHPT School of Library Science Digital preservation process  Organisational  Managerial and  Technical
  6. 6. SHPT School of Library Science Organisational issues: digital preservation policy  Justification for preservation  Organisational and financial commitment  Preservation of authentic resources and quality control  Metadata creation  High-level identification of roles and responsibilities  Training and education
  7. 7. SHPT School of Library Science Managerial issues  preservation planning  developing strategy  taking sole responsibility for preservation  dealing with IT staff or external preservation service providers
  8. 8. SHPT School of Library Science Methods of digital preservation  Bitstream Copying  Durable, Persistent Media  Standards  Migration  Emulation  Encapsulation  Preservation Metadata
  9. 9. SHPT School of Library Science Bitstream Copying – or backing up data, where you make a duplicate of the digital object. Durable, Persistent Media – where you preserve the physical media, or CD, on which the object is stored. Migration – where you copy data from one technology to another to avoid obsolescence of both the physical media and the data format. Standards – relies on recognized, long- term standards over proprietary formats. Emulation – process of reproducing software and hardware environments to translate code from one computing environment to run on another. Encapsulation – as part of an emulation strategy, where objects and metadata are grouped together to help decode and render object later. Preservation Metadata – describes the software, hardware and requirements of the digital object to use in preserving the object. Preservation Strategies
  10. 10. SHPT School of Library Science challenges of digital preservation  Technology obsolescence  Absence of established standards, protocols, and proven methods for preserving digital information  technological or economic feasibility of operating on a mass scale
  11. 11. SHPT School of Library Science Learning more about digital preservation  Preserving Access to Digital Information (PADI) site published by the Australian National University  Directory of Digital Repositories and Services in the UK  Contracting Out for Digital Preservation Services: Information Leaflet and Checklist, by Duncan Simpson
  12. 12. SHPT School of Library Science Thank You !!
  13. 13. SHPT School of Library Science