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2003-DP04: Defining subfield $2 in fields 155, 455 and 555 |
 | | However, without subfield $2 in the authority record, the system would not recognize the entire string in the bibliographic record, and would not be able to replace it with the correct string (including its correct subfield $2 code). |
 | | Subfield $2 in the authority record is also desirable for systems that allow global change in bibliographic records (currently most systems do this). |
 | | Adding subfield $2 to all three authority fields (155, 455 and 555) would allow a system to distinguish between thesauri in displaying the hierarchical structure so that, for example, when a GSAFD term is displayed only the GSAFD hierarchy would display, rather than mixing it with that of another similar thesaurus such as LCSH. |
| www.loc.gov /marc/marbi/2003/2003-dp04.html (2173 words) |
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