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What Can We Do About Our Legacy Data?


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Presentation at the Cataloging Norms Interest Group at the ALA Annual Conference in San Francisco, Saturday, June 27, 2015.

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What Can We Do About Our Legacy Data?

  1. 1. D I A N E H I L L M A N N C A T A L O G I N G N O R M S I G A L A A N N U A L 2 0 1 5 S A N F R A N C I S C O WHAT CAN WE DO ABOUT OUR LEGACY? 6/27/15 ALA 2015 Cataloging Norms
  2. 2. MORE QUESTIONS THAN ANSWERS • How do we think we’ll use the legacy MARC data? • Will we map once and discard the old data? • This was the usual data migration path for ILS data • Will we continue to maintain older data ‘just in case’? • How will the changes in sharing paradigms affect how some important functions are managed? 6/27/15 ALA 2015 Cataloging Norms
  3. 3. WHAT WILL WE USE LEGACY DATA FOR? • Have we agreed yet on what functions we want to support? • Local discovery services? • Circulation? • ILL? • What else? • What does expansion of sharing into the larger data world buy us? 6/27/15 ALA 2015 Cataloging Norms
  4. 4. IS EXPOSING LINKED DATA THE SAME AS SHARING DATA? • Do we know what sharing partners will want? • What if they’re not using the same schema we are using? • Is consensus necessary? Can’t we expose everything and let others pick and choose? • Do contractual agreements and licenses still hold sway when we stop exchanging ‘records’? • What about those still tied to MARC? Can we still include them? How can we accomplish that? 6/27/15 ALA 2015 Cataloging Norms
  5. 5. Common Cache Local Cache (a.k.a. Catalog) Other Local Cache 6/27/15 ALA 2015 Cataloging Norms
  6. 6. THE OLD SHARING MODEL • Data passes through a central cache, where identity management and quality control occur • Caches at either end follow agreed upon standards to participate • System of transaction charges supports the central functions 6/27/15 ALA 2015 Cataloging Norms
  7. 7. Common Cache Local Cache Exposed Data 6/27/15 ALA 2015 Cataloging Norms
  8. 8. THE NEW SHARING MODEL • Some exchange of data between local cache and central cache may happen much as before, but the local cache is likely to have more choices for data acquisition • Local caches expose data for use by other downstream users, bypassing the central cache’s identity management, quality control and fees • ‘New’ business models replace the old transaction based charges • Smaller services may spring up to support some of these functions for local caches 6/27/15 ALA 2015 Cataloging Norms
  9. 9. DO WE KNOW WHERE WE’RE GOING? • Will we expect to ‘choose’ a schema and bring everything with us into that schema? • Will new ILSs emerge to assist with that? • What if we choose badly? Can we have a makeover? • Does it make sense to retain the legacy MARC data in a common cache? Or perhaps many local caches? • Can this strategy future proof our decision-making? 6/27/15 ALA 2015 Cataloging Norms
  10. 10. LEGACY AS VALUE • How do we maintain the value of our legacy data if our new data doesn’t integrate well with it? • How will we avoid losing data in the process of transforming it? 6/27/15 ALA 2015 Cataloging Norms
  11. 11. WHAT ABOUT MULTI-MEDIA? • How much should requirements for new media, ebooks, etc., drive our requirements? • What about other languages and scripts? • Can simple solutions work for the entire array of more complex materials and versions? • Do we all need to be using the same schema and doing the same thing? Can we still share data if we don’t? 6/27/15 ALA 2015 Cataloging Norms
  12. 12. OPTIONS TO CONSIDER • Bring the legacy records with us into new systems • Keep them as MARC or map them to new schema and toss the MARC? • Park the MARC, retain it as cache, just in case we need to re-do the mapping? • Does the solution depend on whether we can map MARC easily into something and back without significant loss? 6/27/15 ALA 2015 Cataloging Norms
  13. 13. WHERE DO MAPPING & PROFILES FIT? • Who will do the mapping? Will one map work for all of us and our various needs? • Why are application profiles useful, and how do we manage and share them • Can we manage and share maps as we do other resources (like vocabularies, for instance?) 6/27/15 ALA 2015 Cataloging Norms
  14. 14. TRANSITION ... • ... Not very comfortable • ... Not without significant challenges • We will prevail! Contact: Diane I. Hillmann Email: 6/27/15 ALA 2015 Cataloging Norms