Link Maintenance in a Web-accessible OPAC

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This is a short presentation from 1999 about link maintenance in the a web based opac. Really old but might be of interest by robin fay, georgiawebgurl@gmail.com.

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Link Maintenance in a Web-accessible OPAC

  1. 1. Link Maintenance in a Web-accessible OPAC <ul><li>Robin Fay </li></ul><ul><li>Discovering invalid 856s </li></ul><ul><li>Determining appropriate action </li></ul><ul><li>Implementing a plan </li></ul>
  2. 2. <ul><li>The 856 field provides a hyperlink to online articles & journals </li></ul><ul><li>Help! It’s not there! </li></ul><ul><li>Discovering missing URLs </li></ul><ul><ul><li>Patrons, Staff </li></ul></ul><ul><ul><li>Reports </li></ul></ul>Link Maintenance in a Web-accessible OPAC
  3. 3. <ul><li>Reasons for invalid 856s are often temporary </li></ul><ul><ul><li>Server errors </li></ul></ul><ul><ul><li>Network problems including internet security (e.g., firewalls) </li></ul></ul><ul><ul><li>Timeout problems due to too much strain on bandwidth </li></ul></ul><ul><ul><li>Access requirements/site licenses </li></ul></ul><ul><ul><li>Site maintenance </li></ul></ul>Link Maintenance in a Web-accessible OPAC
  4. 4. <ul><li>Reasons for invalid 856s can be permanent </li></ul><ul><ul><li>Vendor problems </li></ul></ul><ul><ul><li>Site has moved </li></ul></ul><ul><ul><li>Site is no longer published </li></ul></ul>Link Maintenance in a Web-accessible OPAC
  5. 5. <ul><li>Resolving invalid 856s </li></ul><ul><ul><li>Independent URL checking software (LinkBot, Link Sleuth) </li></ul></ul><ul><ul><li>Reports generated from the library catalog </li></ul></ul><ul><ul><li>Human intervention </li></ul></ul><ul><ul><ul><li>verify that bad links need to be corrected </li></ul></ul></ul>Link Maintenance in a Web-accessible OPAC
  6. 6. <ul><li>Other issues </li></ul><ul><ul><li>Resolving 856s where the content has changed </li></ul></ul><ul><ul><li>Consistency of information displayed in the OPAC from the 856 </li></ul></ul><ul><ul><ul><li>Pre-URL($u) are invisible to a large variety of OPACS </li></ul></ul></ul><ul><ul><ul><li>Consistency of labeling the 856 information in the OPAC </li></ul></ul></ul><ul><ul><ul><ul><li>Different vendors do different things </li></ul></ul></ul></ul>Link Maintenance in a Web-accessible OPAC
  7. 7. <ul><li>The importance of link maintenance </li></ul><ul><li>In 1998, GPO which has approximately 8,000 records with MARC 856 fields found in a test of last used URLs discovered that more than 20% were either bad or no longer useful </li></ul>Link Maintenance in a Web-accessible OPAC
  8. 8. Selected Bibliography <ul><li>URLS, PURLS, & TRULS: Link maintenance in the Web-accessible OPAC, Tyler, Computers in the Library, http://www.du.edu/!ttyler/cil99/proceedings.htm </li></ul><ul><li>Precoordination Unnecessary in LCSH?Are Web Sites More Important to Catalog </li></ul><ul><li>than Books? A Reference Librarian's Thoughts on the Future of Bibliographic Control, Thomas Mann, http://lcweb.loc.gov/catdir/bibcontrol/mann_paper.html </li></ul><ul><li>Making room for MARC in a Dublin Core world, Medeiros, Norm. Online, Nov. 1999, http://www.onlineinc.com/onlinemag/OL1999/medeiros11.html </li></ul>

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