Friday, October 30, 2009

Back to the Fedora: Part 3

This is the penultimate post in this series. The final post will describe an aggregate object ("study") that will contain relatively little content, but which serves as a grouping element for more basic elements.

The object to the left is a conventional Fedora Data Object, but I include it here as an example where we have important content to preserve and deliver, and where the content is somewhat of a "one off" and doesn't conform to a unique Content Model.

In this case we have the survey instrument that was used to collect the data in icpsr:eager-survey-data-25041.

The instrument is available in two different languages (English and Spanish), and while the original deposit was PDF-format, we have also produced a TIFF-format of each version for preservation purposes. This translates into a simple object with four Datastreams, one for each (language, format) combination.

We assert membership to the aggregate "study" object in RELS-EXT. We also assert a connection to the associated dataset using a custom relationship we minted: isInstrumentFor. It isn't clear (yet) if having a specialized relationship such as this will be any more useful than a less descriptive relationship (e.g., isRelatedTo, to make one up).


  1. Hi Bryan--
    Sorry, just making sure: shouldn't the bottom two boxes in your graphic here end -TIFF instead of -PDF?

  2. Good catch, David. You're absolutely right. The graphic is incorrect.


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