234:dollar_w_validation [[MARC Report]]

Validation of authority subfield $w

Before version 234, MARC Report used one set of rules (based on LC practice) to validate authority control subfield $w. No distinction was made for different 'types' of authority records.

Beginning with version 234, the program will now first determine if an authority record is for a subject heading (SAF), or a name/series heading (NAF)¹⁾, and then, for control subfield $w, use a slightly different set of validation rules for each. This change is being made to more closely follow the LC Guidelines that are given in the “Blue Pages”.

The following table²⁾ lists the $w values that will now be considered valid by MARC Report:

For now, the new $w/0 code 'r' (Relationship designation in subfield $i or $4) will be considered valid across the board, but this will no doubt be updated as more information becomes available.

¹⁾

This determination is made as follows: records with 100-130 are considered Name/Series headings, records with tags 150 and higher are considered Subject headings, with the exception of records with tags 151, which, for the purpose of these $w checks, will be considered Name/Series headings

²⁾

For a more complete listing of the subfield $w codes, please visit the MARC manual section for Tracings and References, or see the more complete $w table we created to help with these changes

234/dollar_w_validation.txt · Last modified: 2021/12/29 16:21 (external edit)

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