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Hub and Spoke (H

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A common METS-based profile. A standard programming API ... Integrating the PREMIS data model into METS ... Add the METS file as an item in the submission package ... – PowerPoint PPT presentation

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Title: Hub and Spoke (H


1
Hub and Spoke (HS)
  • Repository Interoperability Architecture with a
    forward-looking emphasis on preservation metadata
    and activities

2
The problem
  • Plethora of repositories
  • Not just across institutions, but even with a
    single institution
  • Overabundance of data sources
  • Web crawlers like Heritrix or OCLC's WAW,
    digitization and scanning services, individual
    authors, batch ingest from legacy systems
  • Current integration solutions are local and ad hoc

3
The solution
  • A common METS-based profile
  • A standard programming API
  • A series of scripts that use the API and METS
    profile for creating SIPs and DIPs which can be
    used across different repositories

4
(No Transcript)
5
METS profile
  • DRAFT http//dli.grainger.uiuc.edu/echodep/METS/
    DRAFTS_2006-06-29/METSProfile.xml
  • Foci
  • Repository interoperability
  • minimally at the file and descriptive metadata
    level, probably not at the structural level
  • Digital preservation
  • Web captures
  • Administrative metadata technical and provenance
  • Integrating the PREMIS data model into METS
  • Priority in preserving the representation
    descriptive metadata, content, and structure

6
Phased implementation
  • Phase 1 Interoperability
  • Phase 2 Persistent Storage Layer
  • METS Profile as an AIP
  • JSR-170 content repository standard
  • End-user Access (search/browse/render) is low
    priority

7
Details of current implementation
  • Based on ingest scripts that were developed to
    support the repository evaluation
  • Java except at the outermost layers where native
    API calls are utilized
  • We consider this a proof-of-concept
    implementation the goal being to demonstrate
    round-trip interoperability between three
    repositories DSpace, Eprints, and Fedora
  • Currently working with minimal administrative
    metadata

8
To-Hub Spoke
Data Store / DIPs
Extract format-specific technical metadata
Generate/collect digital provenance metadata
Embed links to digital items
image.jpg
Model structure of the item
Embed native metadata
Transform/enrich native metadata
metadata.xml
9
From-Hub Spoke
SIPs
Transform hub metadata to repository-compatible
metadata
Assemble into packages for repository ingest
Add the METS file as an item in the submission
package
metadata.xml
hubMets.xml
10
Future Work
  • True repository for Archival Information Packages
    (AIPs)
  • Add a persistence layer possibly based on JSR-170
  • Assign global, persistent identifiers
  • Support basic functionality required for a
    interoperability such as the Pathways obtain,
    harvest, and put services
  • Other preservation functions
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