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Infrastructure for Use
RDA Infrastructure Beyond the
Guidelines
“What’s an RDA
Record?”
Diane I. Hillmann
RDA UPDATE
Descriptive Building Blocks
O Records built from statements (triples)
O Triples contain subject – predicate - object
O Sta...
OFirst, a Review of Important Definitions:
O Class = A set of similar things
O Domain = Infers that the thing being descri...
How Does RDA Support
• Applications like RIMMF?
• Users making choices about local usage?
• Mapping services (and the maps...
Around that corner …
O RDA Registry [http://www.RDAregistry.info]
O Uses OMR, GitHub for easier (and more
automated) maint...
The New Map
June 29, 2014RDA Update, Las Vegas 7
Documentation on Elements
O Basic information
on elements:
O Suggested
prefix
O Example URIs
O Changelog
feed
June 29, 201...
Available Downloads
O HTML build from
JSON--LD
O OMR UI used for
updating
O Download choices
updated with every
change to ...
The Important Bits
“Cool URIs don’t
change”
—Tim Berners-Lee
Flickr photo by Ludovic Hirlimann
URI strategy
O One URI was more than enough, or so
we used to think. We’ve set up multiples
for RDA —Why?
ODevelopers gene...
Lexical Aliases
O URIs based entirely on labels are not a
good long term strategy for a standard still
developing
O Termin...
Canonical URIs
O Fixed, stable, always maintained (even as a
redirect)
O Based on numbers or letters and numbers
O Assigne...
What’s Next?
O Installing more background processes
to simplify and stabilize operations (and
continue to limit requiremen...
AND ...
O Application Profiles (finally?)
O Reflecting the intentions and choices of the
data providers
O Formatted to all...
We Welcome Feedback!
O On the RDA-L discussion list
O Email to individuals (see the RDA Registry
home page for addresses)
...
What is an RDA Record?
What is an RDA Record?
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What is an RDA Record?

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Presentation at ALA session on new information about the RDARegistry.

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What is an RDA Record?

  1. 1. Infrastructure for Use RDA Infrastructure Beyond the Guidelines “What’s an RDA Record?” Diane I. Hillmann RDA UPDATE
  2. 2. Descriptive Building Blocks O Records built from statements (triples) O Triples contain subject – predicate - object O Statements contain data O Elements (classes, properties) O Relationships (relating ‘subject’ to ‘object’) O Values (descriptive terminology) O Where does the data come from? O How is it maintained over time? O Where do I find it? June 29, 2014RDA Update, Las Vegas 2
  3. 3. OFirst, a Review of Important Definitions: O Class = A set of similar things O Domain = Infers that the thing being described is a member of a particular class (‘The subject is a ________’) O Range = The object is inferred to be a member of a specific class O Constrained = Contains a domain and/or range O Unconstrained = Not constrained by a domain or range O CURIE = Syntax for Compact URIs (superset of XML prefixes)
  4. 4. How Does RDA Support • Applications like RIMMF? • Users making choices about local usage? • Mapping services (and the maps themselves)? • Vendors trying to build systems using RDA?
  5. 5. Around that corner … O RDA Registry [http://www.RDAregistry.info] O Uses OMR, GitHub for easier (and more automated) maintenance and documentation O Contains a comprehensive set of URIs for many purposes O Canonical URI, lexical (multi-lingual) aliases O Version and release control O Outputs in many 'flavors' for the use of many applications June 29, 2014RDA Update, Las Vegas 6
  6. 6. The New Map June 29, 2014RDA Update, Las Vegas 7
  7. 7. Documentation on Elements O Basic information on elements: O Suggested prefix O Example URIs O Changelog feed June 29, 2014RDA Update, Las Vegas 9
  8. 8. Available Downloads O HTML build from JSON--LD O OMR UI used for updating O Download choices updated with every change to element sets June 29, 2014RDA Update, Las Vegas 10
  9. 9. The Important Bits
  10. 10. “Cool URIs don’t change” —Tim Berners-Lee Flickr photo by Ludovic Hirlimann
  11. 11. URI strategy O One URI was more than enough, or so we used to think. We’ve set up multiples for RDA —Why? ODevelopers generally want something they can read easily without a lookup OVocabulary creators want stability and maintenance processes that don’t require a lot of URI changes OMachines don’t care one way or the other June 29, 2014RDA Update, Las Vegas 13
  12. 12. Lexical Aliases O URIs based entirely on labels are not a good long term strategy for a standard still developing O Terminology changes, and labels change too O Always redirected after changes O RDA is an international standard intended to be available in multiple languages O RDA tends to have lots of long element names, not always ideal for labels June 29, 2014RDA Update, Las Vegas 14
  13. 13. Canonical URIs O Fixed, stable, always maintained (even as a redirect) O Based on numbers or letters and numbers O Assigned automatically, so no typos O Language independent (Multiple languages can be accommodated using the same canonical URI) O Change of element itself only necessary if the definition changes significantly June 29, 2014RDA Update, Las Vegas 15
  14. 14. What’s Next? O Installing more background processes to simplify and stabilize operations (and continue to limit requirements for human effort ) O Expanding and improving download options O More languages O Improved synchronization with the Toolkit June 29, 2014RDA Update, Las Vegas 16
  15. 15. AND ... O Application Profiles (finally?) O Reflecting the intentions and choices of the data providers O Formatted to allow machine-to-machine interaction (as well as documentation for humans) O Enabling [some] validation processes on usage, constraints and values O Interoperability without prior agreement June 29, 2014RDA Update, Las Vegas 17
  16. 16. We Welcome Feedback! O On the RDA-L discussion list O Email to individuals (see the RDA Registry home page for addresses) O Feedback button on every OMR page O Issues page on the GitHub Project page: https://github.com/RDARegistry/RDA- Vocabularies/issues June 29, 2014RDA Update, Las Vegas 18

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