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From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Stephen Hearn
Sent: Monday, December 11, 2017 2:37 PM
>
> The relationship that RDA expects to be represented hierarchically in the AAP string is
> the relationship between the work and an expression. There is no relationship designator
> for the relationship between a work and an expression ...
No designators, but we do have the elements in RDA Chapter 17 and their labeling to make the relationships clear:
100 1 $a Gregorovius, Ferdinand, $d 1821-1891. $t Lucrezia Borgia. $l German $s (Third edition)
500 1 $i Work expressed: $a Gregorovius, Ferdinand, $d 1821-1891. $t Lucrezia Borgia $w r
That said, I haven't come across any authority records making use of these elements--putting NACO practice and record maintenance aside, the Work AAP is already embedded in the Expression AAP in a kind of shorthand, as Stephen notes above. But this can be different in Bibframe or another non-MARC coding environment:
bfWork record describing an RDA Work
<work expressed> / <expression of work>
bfWork record describing an RDA Expression
As we move into linked data record/data formats, is it worth the effort to begin denoting Chapter 17 relationships *explicitly* in MARC authority records?
--
Mark K. Ehlert O'Shaughnessy-Frey Library
Cataloging and Metadata University of St. Thomas
Librarian 2115 Summit Avenue
St. Paul, MN 55105
<http://www.stthomas.edu/libraries/>
- Alma: NA02 // Primo: MT NA01
"Experience is by industry achieved // And perfected by
the swift course of time"--Shakespeare, "Two Gentlemen of
Verona," Act I, Scene iii
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