> -----Original Message----- > From: Resource Description and Access / Resource Description and Access > [mailto:RDA-L@LISTSERV.LAC-BAC.GC.CA] On Behalf Of Benjamin A Abrahamse > Sent: October 25, 2012 1:52 PM > To: RDA-L@LISTSERV.LAC-BAC.GC.CA > Subject: Re: [RDA-L] Additional work required by RDA ...
> It also occurs to me that RDA 6.9.1.3 states, " Record as many [content > type] terms as are applicable to the resource being described " so a > computer game, for example, could be described: > > 336 $a computer $b c $2 rdacontent > 336 $a interactive $b i $2 rdacontent > In the RDA-ONIX Framework these are isolated attributes and not really suitable as Content Type terms. The goal in the RDA-ONIX Framework is to create a "BaseContentCategory" that concatenates multiple primary values found under each attribute for Content Type. Each combination of primary values from the different attribute categories can produce one and only one BaseContentCategory, which will get a label of some kind. One needs to avoid duplication of labels for different combinations of primary values -- it is this phenomenon that is at the source of the complaints over wordy Content Types. For example, "cartographic three-dimensional form" concatenates a set of primary values. That unique set of primary values needs a unique label (although what ultimately gets displayed to end-users can be modified-- the underlying values being pointed to, however, have to be maintained and those together form the unique label that gets put into the 336 field). RDA-ONIX Framework: http://www.loc.gov/marc/marbi/2007/5chair10.pdf "Interactive" is a primary value found under the Interaction attribute (not used in RDA). The idea is that this likely wouldn't stand alone but would be found with other values to create a BaseContentCategory. In other words, if one is looking to create a term for a Content Type, one can't just say "not applicable" to all the other attributes if in fact some do apply. Using "interactive" alone means that all of the other attributes are not applicable. "Computer" is a value not found in the list of primary values (it's part of an open value set from the Form/Genre attribute), and so its use forms a "QualifiedContentCategory." If a QualifiedContentCategory can be built out of both "computer" and "interactive" (and whatever other attributes apply) then only one label can be used, and this goes into a single Content Type (336) element. As soon as we get into mutually exclusive primary values do we get into multiple Content Types (for example, "language" and "music" are mutually exclusive primary values under the 'Character' attribute and would by necessity lead to two separate Content Type labels, once other applicable attributes are concatenated to form the single label for each Content Type). Thomas Brenndorfer Guelph Public Library
