I came across n 2012041419, an RDA NAR which has been made into an undifferentiated name. I think it illustrates the difficulties inherent in creating undifferentiated NARs under RDA, and the important of being able to make all authorised personal name access points unique.
010 $a n 2012041419
040 $a DLC $b eng $c DLC $e rda $d DLC
1001 $a Zhang, Xiaomei
374 $a Translator
377 $a chi $a rus
4001 $a ÕÅÏþÃ·
667 $a Non-Latin script reference not evaluated.
670 $a [Translator of 1955 Nian Xizang ji xing]
670 $a 1955 Nian Xizang ji xing, 2010:$$bt.p. (ÕÅÏþÃ· = Zhang Xiaomei [in rom.] translator)
670 $a [Author of Heilongjiang Sheng guo you lin quan gai ge bao zhang ti xi yan jiu]
670 $a Heilongjiang Sheng guo you lin quan gai ge bao zhang ti xi yan jiu, 2010: $b t.p. (ÕÅÏþÃ· = Zhang Xiaomei) vita (B.A. from Dongbei nong ye da xue zhi wu bao hu xi in1989; master and doctor degrees in Guan li xue in 2001 and 2005)
675 $a HKCAN database, viewed Sep 19, 2012
374 and 377 appear to have been included with the original identity. When a second identity was added, no further 37X could be added, as it would immediately have been unclear to whom they referred.
In this case, should one of the authors subsequently be removed to a new, differentiated NAR, it is reasonably clear to whom the 37X belong (but only because none have been added for the second identity). In a record containing multiple identities, this would not be clear. Worse, if 046/37X had been added for more than one identity, confusion would ensue, both when examining the undifferentiated NAR, and in trying to move any identity to a new, differentiated NAR. The only safe option would be to remove any existing 046/37X, and not add any more.
If undifferentiated RDA NARs are to be created, it seems the choice is between confusion and inaccuracy if discrete data elements are included, and loss of data if they are not.
It seems better to aim for an differentiated NAR in every case. The BL has aimed to do this since our announcement earlier in the year that we would no longer create undifferentiated NARs. Since then we have pushed our notion of "Profession or occupation" as far as we consider reasonable, and find that it mostly works. However, in a small but annoying number of cases, when information is not available, RDA leaves us short of a qualifier. This is the reason for the BL RDA change proposals 6/JSC/BL/3 and 6/JSC/BL/4, which can be found at http://www.rda-jsc.org/workingnew.html.
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