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 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 Abstract => Concrete Intellectual form Book Printed book E-book (computer file) Physical forms Audio book (e.g. on CD) Abstract => Concrete Movie DVD Intellectual form Film strip Streaming video Physical forms Concrete => Abstract This object is a…? From a bibliographic perspective… • • • • Book (Bound) Serial Manuscript Artifact Concrete => Abstract This object is a…? • CD ROM • DVD Containing… • • • • • Data Music/sound Video Software ??? User interfaces Voyager OPAC Patrons see two “format” choices: • Type • Format • • • • Jargon-y Unclear Ambiguous Imprecise “Why are there two lists?” “Which choice is for movies on DVD?” • • • • Jargon-y Unclear Ambiguous Imprecise “Why are there two lists?” “Which choice is for movies on DVD?” Voyager Staff Client Staff see two “format” choices: • Medium • Type Huh? Whaa? Why? MARC Record Leader and Control Fields (mainly fixed-position fields) Variable Fields MARC Record MARC record Leader http://www.loc.gov/marc/bibliographic/ “Type” Important: Fixed field positions start at “0” MARC record Leader “Type” 15 x 7 = 105 possible combinations (in theory) How many “type” combinations actually exist in a typical database? 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. Count of bib records per Leader/06-07 combination (UT Arlington Library - Voyager ILS) Count Voyager “Type” limit Count Voyager “Type” limit Count of bib records per Leader/06-07 combination (UT Arlington Library - Voyager ILS) Count Voyager “Type” limit Count Voyager “Type” limit Type Limit LDR/06-07 Using 12 Leader/06-07 combinations for “type” limits in Voyager LDR/06-07 WebVoyage HTML code limits.xml Add, remove, or rename “type” limits in the limits.xml file. Reports.mdb Voyager Indexing BIB_TEXT.BIB_FORMAT • 2-character field • value is Leader/06-07 MARC Record MARC 007 Physical Description Fixed Field Positions of most interest are the 00, 01, (and 04) Character position 00 “Category of material” 007/00 WebVoyage HTML code limits.xml Add, remove, or rename “Format” limits in the limits.xml file. MARC 007 Physical Description Fixed Field Positions of most interest are the 00, 01, (and 04) Character position 00 “Category of material” 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 MARC 007 Physical Description Fixed Field MARC 007 Physical Description Fixed Field 007/00 Category of material 007/01 Specific material designation 007/04 Videorecording format Voyager Indexing Reports.mdb BIB_MEDIUM.MEDIUM • 1-character field • value is field 007/00 Missing out on valuable format information. Voyager Indexing BIB_MEDIUM.MEDIUM • 1-character field • value is field 007/00 Missing out on valuable format information. MARC 007 Physical Description Fixed Field MARC 007 Physical Description Fixed Field 36.8% of the collection 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. What do we know so far? “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. “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. Traditional catalogs are not very user-friendly in regards to format limits. How about discovery tools? AquaBrowser “This looks better!” It is better. two lists But not as quite as good as it appears. Full selection of format limits How can they do that? Discovery tool ILS MARC data ingest MARC records MARC records export The data is the same… …but the indexing is more granular. Format 1st criteria 2nd criteria Format configuration matrix Format 1st criteria 2nd criteria Format configuration matrix Field Format [Position(s)] 2nd criteria 1st criteria and Format configuration matrix Code snippet from VuFind (SolrMarc) format-mapping algorithm E.g.: Checking the first two positions of the MARC 007 field …more VuFind format mapping code: MARC record MARC 245 Title Statement Subfield $h Medium Variable fields tend to be… well, variable A keyword search in UT Arlington’s WebVoyage OPAC for "dvd videorecording" (sans quote marks) yielded these 245 h variations -- within the first 10 search results: Human readable, and useful for retrieval via keyword searching. However non-normalized variable fields are problematic for indexing purposes and therefore for utilization in limits and facets. When MARC records are imported into Voyager, these are the values that get indexed as “format”. Terms like this also get indexed. However (in Voyager), they get indexed as keywords, not as formats. MARC 008 Fixed-Length Data Elements One character position is “Form of item” 008 positions 18-34 definitions determined by “Form of material” Character position 23 for: • Books • Computer files • Music • Continuing resources • Mixed materials Character position 29 for: • Maps • Visual materials The 008 field itself is mandatory for all records and the “Form of item” position is mostly mandatory for National Level Full records*. * National Level Full and Minimal Requirements, Control Fields http://www.loc.gov/marc/bibliographic/nlr/nlr00x.html MARC 008 Fixed-Length Data Elements Values for “Form of item” • • • • • • Books Maps Music Continuing Resources Visual Materials Mixed Materials Computer files MARC 008 Fixed-Length Data Elements 008 positions 18-34 definitions determined by “Form of Material” Form of Material Level I And “Form of Material Level I” is defined by? …our old friend, Leader positions 06-07* * 008 - Fixed-Length Data Elements-General Information http://www.loc.gov/marc/bibliographic/bd008.html Form of Material… continued +07 15 Level II forms get collapsed into 7 Level I forms Format Integration: http://www.loc.gov/marc/formatintegration.html Form of Material… continued 15 Level III forms. But varies from the 15 Level II forms. … and additional granularity with 007/02 (and 04) Count of bib records per 008/23 value for “Books” Form of Material (UT Arlington Library - Voyager ILS) (1,079,587 + 22,371) / 1,369,004 x 100 = 80% For most items, we only really know what it’s not. MARC 006 Additional Material Characteristics (Repeatable field) Because the 008 is not repeatable and is dependent on the Leader 06 and 07 for its definition, only one 008 can be included in a record…. The 006 field was created, as part of “format integration”, to record “additional aspects of an item”. [1] [1] For details see: “Format integration and its effect on the USMARC bibliographic format” / Library of Congress. Network Development and MARC Standards Office MARC 006 Additional Material Characteristics Count of bib records per 006/00 value What else have we learned? • Discovery tools employ a more sophisticated format mapping, but are still dependent on the underlying MARC data • Format data exists in MARC variable fields as well as control fields MARC… and other records Voyager records Bib MFHD MFHD MFHD Item Item Item MARC… and other records Voyager records We’ve been looking at Is there format designation at this level? Bib Holdings MFHD MFHD MFHD Yes Items Item Item Item ??? MFHD Records (MARC Format for Holdings Data) MARC 007 Physical Description Fixed Field MARC 007 Physical Description Fixed Field 007/00 Category of material 007/01 Specific material designation Bib Yes MFHD Yes 007/04 Videorecording format MARC 007 Physical Description Fixed Field MARC 007 Physical Description Fixed Field MFHDs MFHD 007 is not going to be very useful! MARC 007 Physical Description Fixed Field Count of MFHD records per 007/00 (UT Arlington Library - Voyager ILS) No “Mandatory if applicable” requirements for MFHD 007 categories MFHD 007 Physical Description Fixed Field Indexing in Voyager However, not aware of Voyager utilizing the MFHD 007 for any WebVoyage functionality. Can holdings with different formats be attached to the same bibliographic record? Bib ?????? Sure! MFHD MFHD MFHD print electronic microform Are they? And should they be? (for your library) Voyager - Item Record Level Voyager uses item-record-level item types for circulation purposes. Ability to effectively search and retrieve by the desired format. Is dependent on how formats are designated in MARC records. And how well the MARC format data is mapped and indexed. Cataloging practice Cataloging records Catalog Hat tip to Allyson Carlyle FRBR/RDA will make search and retrieval by the desired format simple and easy. True False Clip art credit: http://clairc-artstuff.deviantart.com/ Voyager OPAC before FRBR/RDA Patrons see two “format” choices: • Type • Format Voyager OPAC after FRBR/RDA Patrons see five “format” choices: • Type • Format • Content • Media • Carrier Three new “format” choices The End doran@uta.edu