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Format Designation in MARC Records

Format Designation in MARC Records. A Look Under the Hood. Michael Doran Systems Librarian. First, a few words about…. Terminology. Type Medium Format Form. overlapping meanings.

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Format Designation in MARC Records

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  1. Format Designation in MARC Records A Look Under the Hood Michael Doran Systems Librarian

  2. First, a few words about… Terminology • Type • Medium • Format • Form overlapping meanings

  3. AACR2 (1976) and AACR2R (1988) use format to mean a “particular physical presentation of an item” but the term does not appear in AACR (1967, 1970). * * http://www2.archivists.org/glossary/terms/f/format

  4. Abstract => Concrete Book Intellectual form Printed book E-book (computer file) Audio book (e.g. on CD) Physical forms

  5. Abstract => Concrete Movie Intellectual form Film strip DVD Streaming video Physical forms

  6. Concrete => Abstract This object is a…? From a bibliographic perspective… • Book • (Bound) Serial • Manuscript • Artifact

  7. Concrete => Abstract This object is a…? • CD ROM • DVD Containing… • Data • Music/sound • Video • Software • ???

  8. User interfaces

  9. Voyager OPAC • Patrons see two • “format” choices: • Type • Format

  10. Jargon-y • Unclear • Ambiguous • Imprecise “Why are there two lists?” “Which choice is for movies on DVD?”

  11. Jargon-y • Unclear • Ambiguous • Imprecise “Why are there two lists?” “Which choice is for movies on DVD?”

  12. Voyager Staff Client

  13. Staff see two • “format” choices: • Medium • Type

  14. Huh? Whaa? Why?

  15. MARC Record Leader and Control Fields (mainly fixed-position fields) Variable Fields

  16. MARC Record

  17. MARC record Leader http://www.loc.gov/marc/bibliographic/ “Type” Important: Fixed field positions start at “0”

  18. MARC record Leader “Type” 15 x 7 = 105 possible combinations (in theory)

  19. How many “type” combinations actually exist in a typical database?

  20. In UTA’s Voyager database (of ~ 1,600,000 bib records): 53 However the 12 used for type limits encompass 99% of our bib records.

  21. Count of bib records per Leader/06-07 combination (UT Arlington Library - Voyager ILS) CountVoyager “Type” limit CountVoyager “Type” limit

  22. Count of bib records per Leader/06-07 combination (UT Arlington Library - Voyager ILS) CountVoyager “Type” limit CountVoyager “Type” limit

  23. Type Limit LDR/06-07 Using 12 Leader/06-07 combinations for “type” limits in Voyager

  24. LDR/06-07 WebVoyage HTML code

  25. limits.xml Add, remove, or rename “type” limits in the limits.xml file.

  26. Voyager Indexing Reports.mdb • BIB_TEXT.BIB_FORMAT • 2-character field • value is Leader/06-07

  27. MARC Record

  28. MARC 007 Physical Description Fixed Field Positions of most interest are the 00, 01, (and 04) Character position 00 “Category of material”

  29. 007/00 WebVoyage HTML code

  30. limits.xml Add, remove, or rename “Format” limits in the limits.xml file.

  31. MARC 007 Physical Description Fixed Field Positions of most interest are the 00, 01, (and 04) Character position 00 “Category of material”

  32. MARC 007 Physical Description Fixed Field 00 Character position Once you choose a particular “Category of material” value, the remaining values in the 007 field are specific to that category. 01 Character position

  33. MARC 007 Physical Description Fixed Field

  34. MARC 007 Physical Description Fixed Field 007/00 Category of material 007/01 Specific material designation 007/04 Videorecording format

  35. Voyager Indexing Reports.mdb • BIB_MEDIUM.MEDIUM • 1-character field • value is field 007/00 Missing out on valuable format information.

  36. Voyager Indexing • BIB_MEDIUM.MEDIUM • 1-character field • value is field 007/00 Missing out on valuable format information.

  37. MARC 007 Physical Description Fixed Field

  38. MARC 007 Physical Description Fixed Field 36.8% of the collection

  39. MARC 007 Physical Description Fixed Field Count of bib records per 007/00 (UT Arlington Library - Voyager ILS) Mandatory if applicable (In “National Level Full”) Seems to suggest that the 007 field is seldom used for books and serials.

  40. What do we know so far?

  41. “Type” format Based on the MARC Leader positions 06/07. Not all “types” are represented by default. Although there are additional “types” these 12 will likely cover about 99% of your collection. Not very user-friendly.

  42. “Format” format • Based on the 007 field, but only on the first position – so missing a lot of granularity. • Not all possible “formats” are represented. • Probably roughly 1/3 of your collection will be included in the search if this is used as a limit.

  43. Traditional catalogs are not very user-friendly inregards to format limits.

  44. How about discovery tools?

  45. AquaBrowser

  46. “This looks better!” It is better. two lists But not as quite as good as it appears.

  47. Full selection of format limits

  48. How can they do that?

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