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The PREMIS of the UCSD DAMS

The PREMIS of the UCSD DAMS. Arwen Hutt & Bradley D. Westbrook Metadata Analysis and Specification Unit UCSD Libraries For PREMIS Workshop La Jolla, CA, 11 Feb 2008. Local Context. UCSD Libraries’ Digital Content

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The PREMIS of the UCSD DAMS

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  1. The PREMIS of the UCSD DAMS Arwen Hutt & Bradley D. Westbrook Metadata Analysis and Specification Unit UCSD Libraries For PREMIS Workshop La Jolla, CA, 11 Feb 2008

  2. Local Context • UCSD Libraries’ Digital Content • Digital production distributed throughout the libraries (MSCL, SIO, AAL, etc.) • Projects dating from the mid-nineties • Metadata (descriptive & technical) varies • Formats are fairly, but not completely, homogenous; primarily images at this point, but also text, audio and video. • UCSD Libraries’ DAMS • Bring together Libraries’ digital objects to facilitate management • Normalize metadata

  3. Arriving at PREMIS • Problem of Technical Metadata • Common semantic units encoded/stored in many different ways (both standard and local) • Simplify management • Support format specific metadata • Choice of PREMIS • Express non format specific metadata • (Current) management procedures utilize the same elements regardless of file format • Extensible for supporting future additional management functions

  4. Object Requirements • METS Profiles • Codify requirements for the DAMS • Simple Object Profile & Complex Object Profile • PREMIS techMD section required • Additional, techMD sections optional for format specific metadata • MIX • Audio Spec / Guidelines (potential)

  5. Required PREMIS Elements • Elements • Required: • pre/object/objectIdentifier/objectIdentifierType • pre/object/objectIdentifier/objectIdentifierValue • pre/object/preservationLevel • pre/object/objectCategory (file) • pre/object/objectCharacteristics/fixity/messageDigestAlgorithm • pre/object/objectCharacteristics/fixity/messageDigest • pre/object/objectCharacteristics/size • pre/object/objectCharacteristics/format/formatName • pre/object/creatingApplication/dateCreatedByApplication • Encouraged, but not required: • pre/object/storage/storageMedium • pre/object/objectCharacteristics/formatDesignation/formatVersion pre/object/creatingApplication/creatingApplicationName • pre/object/originalName

  6. Implementing PREMIS • Where does it come from? • Automated extraction and recording (jhove) • Taken from legacy metadata (either recorded in house or vendor supplied) • Management Functions • Authenticity verification • Replication of files to CDL’s DPR • Format migration

  7. Limitations of the DAMS’ PREMIS • Use only base level object assertions • No use of event, agent, or rights assertions

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