- From: Mike Taylor <mike@tecc.co.uk>
- Date: Wed, 24 Apr 2002 11:24:03 +0100 (BST)
- To: levan@oclc.org
- CC: barbara.shuh@nlc-bnc.ca, azaroth@liverpool.ac.uk, Theo.vanVeen@kb.nl, Kevin.Gladwell@bl.uk, www-zig@w3.org
> Date: Tue, 23 Apr 2002 15:07:35 -0400 > From: "LeVan,Ralph" <levan@oclc.org> > > Mike, you're scaring me! Why, thank you! > > util:creator,bib2:personal,dclib:agentDetail=Kernighan > > We've not agreed to any syntax like that and the sense at the ZIG > meeting was to not allow it. But, what that would mean in SRW and > what I think you think it means are two different things. > > I think you mean for that to be a combination of attributes from > multiple Attribute Sets to generate an access point. We don't do > that in SRW. Ah -- I see. Well you've got me there. But doesn't this point up a fundamental shortcoming in CQL as currently conceived, namely, that it's not benefitted from the lessons of the attribute architecture in terms of refining an access point from one set with qualifiers from another? That's the thing that makes interoperability between cross-domain and bibliographic servers and clients possible in the AA world -- surely CQL doesn't want to discard that? > We use indexes which are externally predefined combinations of > attributes from any attribute sets. We should perhaps take this over the ZING list if it's not of general interest, but this concerns me. For all that Z39.50 in general, and the attribute architecture in particular, has real complexity, that complexity gives rise to real power. I very much understand and sympathise with the drive to simplify, but there are two kinds of complexity: real and apparent. SRW and CQL more surely should slice of apparent complexity whenever it can, but when it starts to slice of "real complexity", so that interoperability functionality goes with it, then we need to be very very sure that we're not compromising the result. (Sorry if this has all been gone over before, BTW.) > The only possible interpretation of that query in SRW is that you > want Kernighan as either a util:creator or a bib2:personal (huh?) or > a dclib:agentDetail (huh?). :-) _/|_ _______________________________________________________________ /o ) \/ Mike Taylor <mike@miketaylor.org.uk> www.miketaylor.org.uk )_v__/\ "What's it like?" -- Eric Idle, Monty Python's Flying Circus.
Received on Wednesday, 24 April 2002 06:24:04 UTC