aDORe: a modular, standards-based Digital Object Repository

This paper describes the aDORe repository architecture designed and implemented for ingesting, storing, and accessing a vast collection of Digital Objects at the Research Library of the Los Alamos National Laboratory. The aDORe architecture is highly modular and standards-based. In the architecture, the MPEG-21 Digital Item Declaration Language is used as the XML-based format to represent Digital Objects that can consist of multiple datastreams as Open Archival Information System Archival Information Packages (OAIS AIPs). Through an ingestion process, these OAIS AIPs are stored in a multitude of autonomous repositories. A Repository Index keeps track of the creation and location of all the autonomous repositories, whereas an Identifier Locator reflects in which autonomous repository a given Digital Object or OAIS AIP resides. A front-end to the complete environment---the OAI-PMH Federator---is introduced for requesting OAIS Dissmination Information Packages (OAIS DIPs). These OAIS DIPs can be the stored OAIS AIPs themselves, or transformations thereof. This front-end allows OAI-PMH harvesters to recurrently and selectively collect batches of OAIS DIPs from aDORe, and hence to create multiple, parallel services using the collected objects. Another front-end---the OpenURL Resolver---is introduced for requesting OAIS Result Sets. An OAIS Result Set is a dissemination of an individual Digital Object or of its constituent datastreams. Both front-ends make use of an MPEG-21 Digital Item Processing engine to apply those services to OAIS AIPs, Digital Objects, or constituent datastreams that were specified in a dissemination request.

[1]  Herbert Van de Sompel,et al.  File-Based Storage of Digital Objects and Constituent Datastreams: XMLtapes and Internet Archive ARC Files , 2005, ECDL.

[2]  Herbert Van de Sompel,et al.  Generalizing the OpenURL Framework beyond References to Scholarly Works: The Bison-Futé Model , 2001, D Lib Mag..

[3]  Herbert Van de Sompel,et al.  The multi-faceted use of the OAI-PMH in the LANL repositor , 2004, Proceedings of the 2004 Joint ACM/IEEE Conference on Digital Libraries, 2004..

[4]  Herbert Van de Sompel,et al.  OpenURL syntax description: version OpenURL/1.0f, 2000-05-16 , 2000 .

[5]  S. Abrams,et al.  World Library and Information Congress: 69th Ifla General Conference and Council towards a Global Digital Format Registry , 2022 .

[6]  Herbert Van de Sompel,et al.  Access Interfaces for Open Archival Information Systems based on the OAI-PMH and the OpenURL Framework for Context-Sensitive Services , 2005, ArXiv.

[7]  C. Q. Lee,et al.  The Computer Journal , 1958, Nature.

[8]  Naomi Dushay.  Localizing experience of digital content via structural metadata , 2002, JCDL '02.

[9]  Herbert Van de Sompel,et al.  Resource Harvesting within the OAI-PMH Framework , 2004, D Lib Mag..

[10]  Petrina Amonoo,et al.  World Library and Information Congress: 69th IFLA General Conference and Council , 2003 .

[11]  Herbert Van de Sompel,et al.  The "info" URI Scheme for Information Assets with Identifiers in Public Namespaces , 2006, RFC.

[12]  Herbert Van de Sompel,et al.  A Modular, Standards-based Digital Object Repository , 2005 .

[13]  John A. Kunze,et al.  The Dublin Core Metadata Element Set , 2007, RFC.

[14]  Herbert Van de Sompel,et al.  Open Linking in the Scholarly Information Environment Using the OpenURL Framework , 2001, D Lib Mag..

[15]  Herbert Van de Sompel,et al.  Representing digital assets usingMPEG-21 Digital Item Declaration , 2005, International Journal on Digital Libraries.

[16]  Jean Jacques Moreau,et al.  SOAP Version 1. 2 Part 1: Messaging Framework , 2003 .

[17]  Wang Jun.  Open Archives Initiative Protocol for Metadata Harvesting , 2005 .

[18]  Sandra Payette,et al.  Flexible and Extensible Digital Object and Repository Architecture (FEDORA) , 1998, ECDL.

[19]  Sophie Devillers,et al.  Information Technology-Multimedia Framework (MPEG-21)-Part 7: Digital Item Adaptation , 2006 .

[20]  Herbert Van de Sompel,et al.  Using MPEG-21 DIDL to Represent Complex Digital Objects in the Los Alamos National Laboratory Digital Library , 2003, D Lib Mag..