OAIS Activities
Objective: To explore and
support the use of OAIS—Reference Model for an Open
Archival Information System—to preserve the types
of digital data held and created in libraries, archives, and museums.
Overview: OAIS describes
all the functions of a digital repository: how digital objects can be
prepared, submitted to an archive, stored for long periods, maintained,
and retrieved as needed. It does not address specific technologies,
archiving techniques, or types of content. RLG built on the
OAIS
model in our digital preservation projects such as PREMIS and Digital
Repository Certification. We also promoted its understanding and use
through RLG forums, staff papers, and this Web page.
OAIS-modeled repositories
One lament frequently heard about the Open Archival
Information System is that it is a reference model
rather than an implementation plan. As a conceptual framework for a
complete, generic archival system, OAIS's strength is in establishing
common terms and concepts for describing repository architectures and
comparing implementations—without specifying an
implementation an organization should use. Because of this flexibility,
the reference model has been used by a variety of organizations for
planning and designing digital repositories of many different types.
This page indicates how the OAIS model has been used,
facilitating comparison between implementations. The OAIS-modeled or
-compliant repository schematics below were provided in response to a
September 2002 call posted to an OAIS-implementers discussion list or
made
available in presentations and reports.
Some schematics display how OAIS functional entities are mapped to
local processes or entities. Others represent how the OAIS information
model is being applied for local SIPs/DIPs/AIPs (submission
information/dissemination information/archival information packages).
Cedars Project (CURL Exemplars in Digital
Archiving)
Harvard University's Digital Repository
- [link
to
href="/en/downloads/harvard_ejournal_archive.ppt"
target="_blank"] Proposed OAIS-based E-Journal Archive Mapped
to Harvard’s LDI Infrastructure (PowerPoint)
—Best viewed/printed from original presentation slides: [link
to a
href="/en/downloads/longterm/forum02/abrams.html"
target="_blank"] Harvard University's Submission Information
Package for electronic journals (June 2002)
[[This
is actually part of a past event under page 234--point to it wherever
Past Events land?]]
- [ a
href="/en/images/projects/LDI_Infrastructure+OAIS.jpg"
target="_blank"] Repository schematic
Koninklijke Bibliotheek (KB)
Library of Congress
- [[
a
href="/en/downloads/longterm/forum02/cundiff.html"
target="_blank"] The Library of Congress's Archival
Information Package for audiovisual materials
—Presentation contains multiple schematics (June 2002)
[[This
is actually part of a past event under page 234--point to it wherever
Past Events land?]]
Massachusetts Institute of Technology
(MIT)
- D-Space
—Digital repository system (www.dspace.org)
- [a
href="/en/images/projects/MIT_Infrastructure+OAIS.jpg"
target="_blank"] Repository schematic
OCLC Digital Archive
- [ a
href="/en/images/projects/OCLC_Digital_Archive.gif"
target="_blank"] OAIS to OCLC Digital Archive
TERM: the Texas Email Repository Model
- [ a href="/en/images/projects/TERM_fig1.jpg"
target="_blank"] TERM schematic
- [ a href="/en/images/projects/TERM_fig3.jpg"
target="_blank"] TERM (pre-ingest]
- [ a href="/en/images/projects/TERM_fig1.jpg"
target="_blank"] TERM (extraction at ingest)
Resources
- [[ a href="/en/pdfs/rlgnews/news56.pdf"
target="_blank"]] "Preserving Our Digital Heritage" (pdf)
A good overview of OAIS, explained in lay terms
- OAIS official Web site
Contains an abundance of information related to the effort, including
its history, documentation of the reference model and its development,
overview of regional efforts, and workshops (both past and future)
- Reference
Model for an Open Archival Information System (pdf)
The formal specs, adopted by the ISO as ISO 14721:2002
- Preservation
Metadata and the
OAIS Information Model: A Metadata Framework to Support the
Preservation of Digital Objects (pdf)
Presentation by the OCLC-RLG Preservation Metadata Working Group, June
2002
- Trusted
Digital Repositories:
Attributes and Responsibilities (pdf)
An RLG-OCLC report (May 2002)
- Submission Information Package
(SIP) specification, v. 1.0 draft (pdf)
Harvard E-Journal Archive, Harvard University Library (19 December
2001)
- "Meeting the Challenges of
Digital Preservation: The OAIS Reference Model"
OCLC Newsletter, article by Brian Lavoie
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