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Roger Wallin writes: > Ok! I'll continue on the same theme. > I found the following statement: > "However for bibliographic and cross domain searching, the 'Standard > Identifier' (DC.identifier) access point is used for ISSN, ISBNs, ISMNs, > LCCNs, etc." For anyone who wonders, that's in the Bath Profile For SRW, http://zing.z3950.org/srw/bath/2.0/ > Can I use DC.identifier to access both the isbn- and issn-index That's what it says: so if you're searching in a server that conforms to this profile, then yes. (I don't know whether there actually are any such servers, though.) > and how should this be explained in the XML below? It can't be. > If not, how should a new index "identifierAll" be explained that is > a "union" of isbn and issn, ie. ZeeRex doesn't have a way of expressing that./ _/|_ ___________________________________________________________________ /o ) \/ Mike Taylor <[log in to unmask]> http://www.miketaylor.org.uk )_v__/\ Taylor's law of information standards: every standard starts out lean and mean, but is gradually over-generalised to the point where in theory it could save the world, but in practice is useless, or at best no more useful than the original version.