New Report from OCLC Research: A Crosswalk from ONIX Version 3.0 for Books to MARC 21
Jean Godby, Ph.D.
A Crosswalk from ONIX Version 3.0 for Books to MARC 21 describes the crosswalk developed at OCLC for mapping the bibliographic elements defined in Version 3.0 of ONIX for Books to MARC 21 with AACR2 encoding. It is an update to the previous report, Mapping ONIX to MARC, which was published in 2010 and focused on ONIX 2.1.
The new version of ONIX requires a major revision to the crosswalk because of various changes introduced in ONIX 3.0. Despite these changes, however, the MARC record that is produced from the new crosswalk is only slightly different from the output generated by the previous version. The reasons for this are examined in detail.
This report describes the layout of the crosswalk and a strategy for deriving ONIX 3.0 syntax from ONIX 2.1, including a note about how the translation logic is implemented at OCLC. It also builds a complex MARC record from ONIX 3.0 input, focusing on relationships that constitute an important source of shared value in the library and publisher communities, are newly introduced or extensively revised in ONIX 3.0, or illustrate unresolved conceptual problems with bibliographic description. In the process of creating this record, it becomes apparent that some of the concepts introduced in ONIX 3.0 are not easily expressed in a MARC record with AACR2 semantics. The report concludes by speculating about how the MARC output might be improved if the AACR2 semantics is replaced by RDA.
About Gary Price
Gary Price (firstname.lastname@example.org) is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. He earned his MLIS degree from Wayne State University in Detroit. Price has won several awards including the SLA Innovations in Technology Award and Alumnus of the Year from the Wayne St. University Library and Information Science Program. From 2006-2009 he was Director of Online Information Services at Ask.com. Gary is also the co-founder of infoDJ an innovation research consultancy supporting corporate product and business model teams with just-in-time fact and insight finding.