News from the Digital Library
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Transcript of News from the Digital Library
Merrilee Proffitt e(X)literature / Digital Cultures ProjectApril 2003
News from the Digital Library
The Metadata Encoding and Transmission Standard; the Open Archival Information System
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A Telling Example
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Goals of the Digital Library
Collection Access Preservation
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Problems with digital preservation
Unlike books (or papyrus) “bits …. don’t do well with benign neglect”
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Open Archival Information System Reference Model Framework for understanding and applying
concepts needed for long-term preservation of digital information
Model targeted to several categories of user
Already widely adopted as starting point in digital preservation efforts
OAIS Functional EntitiesOAIS Functional Entities
SIP = Submission Information PackageAIP = Archival Information PackageDIP = Dissemination Information Package
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MANAGEMENT
Ingest
Data Management
SIP
AIPDIP
queries
result setsAccess
PRODUCER
CONSUMER
Descriptive Info
AIP
orders
Descriptive Info
Archival Storage
Administration
Preservation Planning
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Information Package Variants
Submission Information Package– Negotiated between Producer and OAIS– Sent to OAIS by a Producer
Archival Information Package– Information Package used for preservation– Includes complete set of Preservation Description
Information for the Content Information Dissemination Information Package
– Includes part or all of one or more Archival Information Packages
– Sent to a Consumer by the OAIS
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Relevance of the OAIS
Offers common ground for discussion– Provides common terminology and concepts
Conceptual framework for building repository systems for digital content
Two components of Reference model– Functional model– Information model: model for packages of
information
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Digital (Library) Objects
Reformatted to digital
“Born digital”
Simple Complex
Digital Library Objects can be…
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Structural metadata
Maps physical files (digital assets) to logical items (complex digital objects)– Scanned print material– A/V material – Multimedia presentations
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Other Metadata
All types of digital objects have other (non-structural) metadata– descriptive
MARC, Dublin Core, etc.
– administrativerights
– technicalformat details
– Standards exist or emerging for these
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METS Scope
Supports– Structural metadata
complex reformatted or born digital objects
– Metadata wrapper frameworkdescriptive, administrative, structural, etc.structural requiredothers use namespaces to reference “extension
schemas”
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METS Scope
Data transfer syntax– between applications– between institutions
Driver for applications– page turner– audio player– multimedia presentation
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METS History
Making Of America II project 1997-2000 METS “born” February 2001 METS 1.0 July 2002 Current version is METS 1.2
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METS Header
Administrativemetadata
FileInventory
Structuremap
Descriptivemetadata
Behavioralmetadata
optional
optional
optional required
optional optional
METS metadata “buckets”
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METS and OAIS framework
Submission Information Package (SIP)METS as transfer syntax
Dissemination Information Package (DIP)METS as transfer syntaxMETS as input to display applications
Archival Information Package (AIP)METS stored internally in an archive
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METS Initiative
Establishment of an editorial board with an editor-in-chief
Complete work on schema, ensure support for other digital library work
Encourage field testing of METS and gather feedback
Encourage tools development Identification of “best practice” extension
schemas
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Current users
Current users include UC Berkeley California Digital Library NYU (digital archive) Florida Center for Library Automation Oxford University British Library National Library of New Zealand Bibliothèque nationale de France Harvard Library of Congress EU MetaE project Michigan State University of Virginia MIT RLG more daily...
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METS summary
Closely related to OAIS information package
Large and growing community of digital library implementers
Very flexible Flexibility means that profiles are
necessary for interoperability
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For More Information…
METS homepage: http://www.loc.gov/standards/METS
OAIS Reference Model:http://www.ccsds.org/RP9905/
RP9905.htmlMerrilee Proffitt