nestor criteria : Catalogue of Criteria for Trusted Digital Repositories

More documents

Recommendations

Info

nestor - Network of Expertise in long-term STORage Working Group “Trusted Repositories – Certification” be removed before submission to the DR. Internal settings may prevent e.g. copying, printing or saving of objects; other objects are encrypted and require the input of codewords or cannot be opened after expiry of a certain period or after a specified number of sessions. "Music and publishing industry agree duplication of copy-protected works with German National Library", joint press information released by Deutsche Nationalbibliothek, Börsenverein des Deutschen Buchhandels and Bundesverbands der Phonographischen Wirtschaft, http://www.dnb.de/wir/recht/vereinbarung.htm 10 Archival storage of the digital objects is undertaken to defined specifications. At the heart of a digital repository is implementation of the actual archiving process. This covers definition of the archival packages, storage of the AIPs and implementation of the long-term preservation measures. 10.1 The digital repository defines its archival information packages (AIPs). Archival information packages are conceptual units which consist of content data and all metadata required for long-term preservation (cf. 12). The definition of the archival information packages should include determination of the package and object structures used, plus suitable storage locations and formats. Selection of the archival information packages should depend on the object types (e.g. digital script or 3D animated clip) and the characteristics of the objects to be preserved. Open, disclosed and frequently used formats are preferred as archive file formats, the assumption being that these will have a longer life, and there are more likely to be techniques and tools for converting or emulating them, given that they are supported by a wide circle of users. Examples of currently used archive formats, although their suitability should be checked in each individual case: • for unformatted text: ASCII/Unicode • for structured text: XML (http://www.w3.org/XML/) • for formatted text: PDF/A (ISO 19005-1: 2005, http://www.iso.org/iso/catalogue_detailcsnumber=38920 • for raster graphics: TIFF 6.0 (http://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf) • for audio formats: WAVE (http://msdn.microsoft.com/enus/library/ms713498%28VS.85%29.aspx) • for video files: MPEG 4 File Format (ISO/IEC 14496, http://www.chiariglione.org/mpeg/standards/mpeg-4/mpeg-4.htm) • for executable programs: the source text and documentation of the programming language When making a decision regarding (lossless) compression of data, a balance should be struck between driving extra memory space on the one 26 nestor criteria, Version 2, 2009
nestor - Network of Expertise in long-term STORage Working Group “Trusted Repositories – Certification” hand and subsequent dependency on the compression method on the other. Open or disclosed methods are preferable. For the structural description of the archival information packages, XML is currently favoured, especially the METS schema, which allows the metadata and references to be managed for the individual files of an object or the files themselves. Coy, Wolfgang: nestor - materialien 5: Perspektiven der Langzeitarchivierung multimedialer Objekte 2006. [44] Witthaut, Dirk; Zierer, Andrea et al.: nestor - materialien 2: Digitalisierung und Erhalt von Digitalisaten in deutschen Museen, 2005. [45] Erpanet-Conference: "File Formats for Preservation", 2004. [46] Abrams, Stephen: Digital Formats And Preservation, 2005. [47] LOC: Sustainability of Digital Formats. Planning for Library of Congress Collections, 2006. [48] ISO 19005-1:2005: Document management - Electronic document file format for long-term preservation, 2005. [49] Helfer, Bernward; Lupprian, Karl-Ernst: Dateiformate: Eigenschaften und Eignung für die Archivierung elektronischer Unterlagen. Eine Handreichung für Archivarinnen und Archivare, 2004. [50] BSI: IT-Grundschutz-Kataloge : Auswahl geeigneter Datenformate für die Archivierung von Dokumenten, 2007. [51] Gutzmann, Ulrike; Kamp, Ulrich et al.: Praktische Lösungsansätze zur Archivierung digitaler Unterlagen: "Langzeitarchivierung" und dauerhafte Sicherung der digitalen Überlieferung, 2007. [52] AK Elektronische Archivierung: Matrix zur Bewertung von Dateiformaten, 2006. [53] Van Wijk, Caroline; Rog, Judith: Evaluating File Formats for Long-term Preservation, 2007. [54] Steinke, Tobias: Universelles Objektformat: Ein Archiv- und Austauschformat für digitale Objekte, 2006. [55] 10.2 The digital repository takes care of transforming the submission information packages (SIPs) into archival information packages (AIPs). As part of the ingest process, the SIPs should be transferred into AIPs and specific long-term preservation metadata added. This might involve conversion of the format. DOC files are converted into PDF/A files. 10.3 The digital repository guarantees the storage and readability of the archival information packages (AIPs). The DR should use appropriate methods to ensure that the archival information packages are correctly stored and can be read using means available within the system. Readability here refers to the capacity to read the storage media and the bit sequence. nestor criteria, Version 2, 2009 27
Page 3 and 4: nestor criteria Catalogue of Criter
Page 5 and 6: nestor - Network of Expertise in lo
Page 7 and 8: SUMMARY Digital information has bec
Page 31: nestor - Network of Expertise in lo
Page 59: nestor - Network of Expertise in lo

nestor criteria : Catalogue of Criteria for Trusted Digital Repositories

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?