File Formats for Preservation

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Stephen Gray

Presentation delivered to museum professionals at BLPAC event, August 2010

Educação

Digital Shelf Life Building Files to Last Stephen Gray Technical Support Officer for Sound, JISC Digital Media [email_address]

What’s the risk? Chinese Telegraphy pre-2002 Decode Morse code into sequence of digits and chop these into quadruplets. Then decode these one by one with reference to the ‘restricted’ operators’ manual.

Real World Scenario #1 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Real World Scenario #2 ,[object Object],[object Object],[object Object],[object Object]

So who recommends file types? ,[object Object],[object Object],[object Object]

Submission guidelines for repositories ,[object Object],http://www.agu.org/pubs/authors/manuscript_tools/journals/formats.shtml

Policies created for long term preservation ,[object Object],[object Object],http://www.ukoln.ac.uk/web-focus/papers/ichim05/html/

Format registries ,[object Object],http://www.nationalarchives.gov.uk/PRONOM/Default.aspx

Which type is the right type? ,[object Object],[object Object]

The five selection criteria: ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],1.Widespread adoption * Look for public sector surveys

[object Object],[object Object],[object Object],[object Object],2.Lack of technological dependencies

[object Object],[object Object],[object Object],3.Disclosure within public realm

[object Object],[object Object],4.Transparency of format & content

[object Object],[object Object],[object Object],[object Object],5.Ability to embed metadata

Other criteria might be ,[object Object],[object Object],[object Object],[object Object],[object Object]

Q. After looking at the criteria we’ve selected format_x . Will it last? A. No, all formats will become obsolete and will need to change over time* *But should still ‘perform’ in the same way

Amazing ‘performing’ data ,[object Object],[object Object],[object Object],[object Object]

How does your data perform? ,[object Object],[object Object],[object Object]

So which type is the right type? ,[object Object],[object Object],[object Object]

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