Preservation Metadata Standards

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Preservation Metadata Standards

• PREMIS METS
• Taylor Surface, OCLC

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(No Transcript)
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Metadata and preservation metadata
Metadata that supports and documents the
digital preservation process
METADATA
Administrative
Administrative
Structural
Structural
Descriptive
Structured information that describes, explains,
locates, or otherwise makes it easier
to retrieve, use, or manage an information
resource
PRESERVATION METADATA
Descriptive
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Preservation Metadata Examples

• Provenance
• Who has had custody/ownership of the digital
  object?
• Authenticity
• Is the digital object what it purports to be?
• Preservation Activity
• What has been done to preserve the digital
  object?
• Technical Environment
• What is needed to render and use the digital
  object?
• Rights Management
• What IPR must be observed?

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Why is preservation metadata important?

• Digital objects are
• technology-dependent
• mutable
• bound by intellectual property rights
• Preservation metadata makes digital objects
  self-documenting across time

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Introduction to PREMIS

• PREservation
• Metadata Implementation Strategies

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PREMIS History

• March 2000 OCLC, RLG jointly sponsored
  international working group on preservation
  metadata
• Preservation metadata framework (June 2002)
• Comprehensive, high-level description of types of
  information constituting preservation metadata
• Used OAIS information model as starting point
• Set of prototype preservation metadata elements
• June 2003 OCLC, RLG sponsored international
  working group
• PREMIS Preservation Metadata Implementation
  Strategies
• May 2005 Released Data Dictionary for
  Preservation Metadata Final Report of the PREMIS
  Working Group
• Comprehensive, practical resource for
  implementing preservation metadata in digital
  archiving systems

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PREMIS Data Dictionary

• May 2005 Data Dictionary for Preservation
• Metadata Final Report of the PREMIS
• Working Group
• 237-page report includes
• PREMIS Data Dictionary 1.0
• Accompanying report (context, data model,
  assumptions)
• Special topics, glossary, usage examples
• Data Dictionary resource for implementing
  preservation metadata in digital archiving
  systems
• Set of XML schema developed to support use of
  Data Dictionary

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From theory to practice
Preservation Metadata Requirements
Digital Archiving Systems
Framework
OAIS
PREMIS Data Dictionary
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PREMIS data model
Intellectual Entities
Rights
Agents
Objects
Events
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Sample Data Dictionary entry
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Introduction to METS

• Metadata
• Encoding Transmission Standard

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Digital Libraries the need

• Digitization technology well understood
• Standards for many digitization processes are
  widely recognized
• However, no MARC standard exists for the digital
  library

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Lack of a standard what it means

• Poor cross-searching
• Limited interchange facilities
• Metadata tied to proprietary packages
• Consequent obsolescence and conversion costs

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The solution

• Semantic consistency analogous to AACR2
• Common container analogous to MARC
• METS is the container!

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METS to the rescue!

• Developed through DLF collaboration
• Maintained by Library of Congress
• XML-based
• Framework for holding all pieces of a digital
  object including various metadata
• Does not prescribe metadata but endorses a number
  of schemes

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Overview of a METS package

• Typically, one METS file corresponds to one
  digital object
• Digital Object contents are either referenced or
  embedded
• Metadata (descriptive, administrative,
  structural) is either referenced or embedded

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METS skeleton
Mets Header
fileSec
File inventory
dmdSec
Descriptive metadata
admSec
Administrative metadata
behaviorSec
Behavior metadata
structMap
Structural metadata
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METS profiles

• Profile describes an application of METS
• Registered with LoC maintenance agency
• Essential for interoperability of packages

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More PREMIS

• http//www.loc.gov/standards/PREMIS
• http//www.loc.gov/standards/METS

More METS
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Preservation Metadata Standards

• Me
• taylor_surface_at_oclc.org