institutional repositories 17-19 july 2007 digital curation creating, managing and preserving...
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Information density vs. life expectancy Paul Conway, School for Scanning, Chicago, 1999TRANSCRIPT
Institutional Repositories 17-19 July 2007
DIGITAL CURATION creating, managing and preserving digital objects
Dr D PetersDISA
Digital Innovation South Africa
Topics
What is digital curation?
Curating digital objects Digital repository functions Role of metadata in digital preservation
Information density vs. life expectancy
Paul Conway, School for Scanning, Chicago, 1999
Future scenario
Where will our descendents find today’s information - in 50 years time?
In what media will it be presented?
What must happen in the space/ time between creation and presentation?
Chain of preservation Authenticity
Committing to storage Maintaining in storage Retrieval Presentation
Transmission Over time and across
technologies Technological approaches Archival practice
What is digital curation?
Digital Curation: lifecycle
Paradigm shift
Preserve an electronic record?
Software translation Beyond safe storage Future representation of components
What is a Digital Information Object ?
METADATA
DATA
Representation Information
Strategies for digital preservation Research agenda
Archival systems Methods and tools Policy and legal framework
Education and training Advocacy workshops Develop suitable educational qualifications Operational training in digital curation
Centre of excellence Third party service provider: commercial / consortial Lead a shared community of practice Trusted digital repository
What is a digital repository?
Digital Repository
Business model for sustainability Agreements with participants Appropriate technological infrastructure Production-level archiving system Define trusted archiving service model
Attributes of a Trusted Digital Repository
“…an organisation that has responsibility for the long-term maintenance of digital resources, as well as making them available [through time and across changing technologies] to communities agreed on by the depositor and the repository.”
Research Libraries Group
http://www.rlg.org/longterm/attributes01.pdf
Trusted Digital Repository
Administrative responsibility Organisational viability Financial sustainability Technological suitability System security Procedural accountability
OAIS Information Model
SIP = Submission Information PackageAIP = Archive In formation PackageDIP = Dissemination Information Package
Functions of Ingest
Level Metadata Authors Names
Projects Theses Publications Datasets
L0
L1
L2
L3
L4
UStellenbosch Access Model
No Access
Access
To be confirmed
View by owner
The role of metadata in digital preservation?
Metadata and Digital Preservation
Metadata is the glue of any digital preservation strategy:
Within a digital repository, “metadata accompanies and makes reference to each digital object and provides associated descriptive, structural, administrative, rights management, and other kinds of information.”
Clifford Lynch (D-Lib Magazine, 1999)
Preservation Metadata
Viability bit stream is intact and readable from digital storage media
Renderability translation of the bit stream into a form that can be viewed by
humans, or processed by computers Understandability
providing enough information that the rendered content can be interpreted and understood by users
PREMIS Metadata Framework to support the preservation of digital objects
http://www.oclc.org/research/projects/pmwg/pm_framework.pdf
Creating the Wrapper Metadata Encoding & Transmission Standard (METS)
Digital Library Federation-sponsored initiative XML document format for encoding metadata necessary for
management of digital library objects within a repository exchange of such objects between repositories (or between
repositories and their users).
METS & Digital Preservation
As a vehicle to express/contain various types of metadata Descriptive, administrative, structural, rights, technical
As a vehicle/wrapper for information and digital repository management OAIS (SIP, AIP, DIP)
Like Nesting Dolls
General FrameworksCedarsOCLC/RLG
DescriptiveMARC Dublin CoreOpenURLOAIONIX
Archive PackagingMETSAIP
StructuralDataDataDataRepresentationInfo
AdministrativeRightsTechnical (NISO, ViDE, etc.)
Content Management Systems General Requirements
Handle repository functions Representation Structural organisation Aggregation Networked distribution
Preservation Requirements Defined preservation strategy Metadata support Integrity checks
D-Space
MySQL
Fedora
Review
What is digital curation?
Preserving digital objects Digital repository functions Role of metadata in digital preservation Legal rights management
Sneak Preview…
Normalising to open formats - open standards. XML schema for preservation - metadata and where to put
it. Identifying data format types programmatically. Normaliser and file namer plugin architecture…well, maybe. Integration with 3rd party software applications (e.g.
DSpace, Fedora, Eprints)
More information…
PADI Preservation Metadata Bibliography:http://www.nla.gov.au/padi/topics/32.html
PREMIS: http://www.oclc.org/research/projects/pmwg/ JHOVE: http://hul.harvard.edu/jhove/jhove.html PRONOM: http://www.nationalarchives.gov.uk/pronom/ OAIS: http://ssdoo.gsfc.nasa.gov/nost/wwwclassic/documents/
pdf/CCSDS-650.0-B-1.pdf METS: http://www.loc.gov/standards/mets/
DISA: Digital Imaging South Africa
http://disa.nu.ac.za
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