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Preservation Features in Repository Software PRESERV: Tim Brody University of Southampton.

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Presentation on theme: "Preservation Features in Repository Software PRESERV: Tim Brody University of Southampton."— Presentation transcript:

1 Preservation Features in Repository Software PRESERV: Tim Brody University of Southampton

2 Repository Software DSpace Fedora GNU EPrints aDORe, Arno, CDSWare, Greenstone, MyCoRe etc.

3 Based On … Developer of EPrints DSpace docs –http://dspace.org/technology/system-docs/ Fedora docs –http://www.fedora.info/download/2.1b/userdocs/ Paul Wheatley, Institutional Repositories in the context of Digital Preservation

4 Preservation Features Stable bitstream storage Identifiers (+fragments) Dissemination Versioning Migration: Verification & Conversion Access Controls Metadata –Content Information –Preservation Description Information –Descriptive Data

5 Bitstream Storage DSpaceEPrintsFedora On-disk file MIME-type Support-level Checksum On-disk file (Document- level format) On-disk checksum File format registry (PRONOM) On-disk file Wrapped in a disseminator

6 Identifiers DSpaceEPrintsFedora Persistent Handles Bitstream URL Internal incremental id. (Document id) GID + Persistent Bitstream id. Identifier service (Object identifiers)

7 Dissemination DSpaceEPrintsFedora OAI-PMH/DC XML export (+METS) OAI-PMH/DC DIDL (tbc) XML export OAI-PMH SIP export OAI-PMH/DC METS/FOXML SOAP & REST APIs File-system

8 Versioning DSpaceEPrintsFedora AIP-level versioning (?) AIP-level versioning History Module (tbd) Object Versioning

9 Migration: Verification & Conversion DSpaceEPrintsFedora Verification during deposit (Bitstreams are black-box) OpenDocument conversion (MS Word ) Disseminators (dynamic migration) + versioning

10 Access Controls DSpaceEPrintsFedora Submitter, editor roles Items can be modified Submitter, editor roles Items can be modified Fine-grained policy (XACML) ?Items can be modified?

11 Metadata DSpaceEPrintsFedora DBMS qualified DC File format support levels DBMS Packaging Information DBMS arbitrary metadata DBMS Packaging Information On-disk DIDL/eprints XML METS [DC + arbitrary metadata] FOXML Packaging Information Disseminators

12 >>PRESERV EPrints<< Pronom integration –File format survey/support/verification Dissemination –GNU EPrints metadata –DIDL (EPrints core feature tbc) –OpenDocument conversion [External Service Integration, e.g. users ]

13 e-Prints Soton Pronom Survey FormatNumber of Records WinZip Compressed Archive ()15 Rich Text Format (1.4)1 Raw JPEG Stream ()1 Portable Document Format (1.6)16 Portable Document Format (1.5)99 Portable Document Format (1.4)315 Portable Document Format (1.3)714 Portable Document Format (1.2)100 Portable Document Format (1.1)12 OLE2 Compound Document Format ()18 Microsoft Powerpoint Presentation ( )38 JPEG File Interchange Format (1.01)1 JPEG File Interchange Format (1.00)1 Hypertext Markup Language (4.0)1 Hypertext Markup Language ()9

14 FormatPronom Matches Binary Interchange File Format (BIFF) Workbook (8)4 Binary Interchange File Format (BIFF) Workbook (8X)4 Hypertext Markup Language ()9 Hypertext Markup Language (4.0)1 JPEG File Interchange Format (1.00)1 JPEG File Interchange Format (1.01)5 Microsoft Powerpoint Presentation (95)70 Microsoft Powerpoint Presentation ( )70 Microsoft Word for Windows Document (6.0/95)26 Microsoft Word for Windows Document ( )26 OLE2 Compound Document Format ()24 PKZIP Compressed Archive ()17 Portable Document Format (1.1)12 Portable Document Format (1.2)100 Portable Document Format (1.3)735 Portable Document Format (1.4)317 Portable Document Format (1.5)99 Portable Document Format (1.6)16 Raw JPEG Stream ()1 Rich Text Format (1.0)1 Rich Text Format (1.1)1 Rich Text Format (1.2)1 Rich Text Format (1.3)1 Rich Text Format (1.4)1 WinZip Compressed Archive ()17


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