piql_When quality matters

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OAIS defines metadata as Preservation Description Information (PDI):

CRITERIA FOR CHOOSING PRESERVATION FILE FORMATS The Piql repository assesses potential preservation file formats against the following criteria: • The full specification of the format must be openly available (anyone with sufficient skills should be able to build software to read file format accurately). • No patent, intellectual property rights or other rights attach to the format. (It should be possible to create the software for reading the file format without license from the patent holder). • The format is widely endorsed and/or adopted (audio files should not be compressed)

• Reference Information (UUID) • Provenance Information (history) • Context Information • Fixity Information (integrity) • Access Rights

Piql is easily configured to accept any metadata standard.

FILE FORMAT NORMALIZATION Normalization means converting ingested files into a small number of pre-selected formats. We do this be- cause some file formats are easier to preserve than oth- ers. Also a smaller number of formats means that fewer preservation actions are required.

- reference model

Piql and OAIS

Piql Preservation Services meet all requirements for long-term digital preservation based on the OAIS model, providing a reliable, understandable and long-term access to managed digital objects to its designated communities, now and in the future. SUMMARY