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Thanks for the information. I was hoping someone more ASN.knowledgeable would jump in. I sorry I overlooked your site earlier - it looks like one of the better ones. -Wayne Steele >From: Olivier Dubuisson <Olivier.Dubuisson@f...> >To: Wayne Steele <xmlmaster@h...> >CC: alaric@a..., xml-dev@l..., danny@p... >Subject: Re: Images embedded in XML >Date: Mon, 09 Apr 2001 06:59:45 +0000 > >Wayne Steele wrote: > > > > What's XDR? > > > > Do you "External Data Representation", or "XML-Data Reduced" ? > > > > If the former - I don't know much about it, but this page ( > > http://ntrg.cs.tcd.ie/4ba2/presentation/xdrandber.html ) claims it's an > > implementation of ASN.1. > >As far as a comparison between XDR and BER goes, this is not the list to >discuss it but people can find a "counter-comparison"(!) in my book that >they can *freely* download (sorry to insist but it seems that freeness >seems to be an argument) from: http://www.oss.com/asn1/dubuisson.html > > > As an ISO standard, the ASN.1 stuff is easily available to people with > > money. > >I'm sorry to tell you that this recurrent argument is wrong! >ASN.1 is a joint standard between ISO and ITU-T. And everybody has the >opportunity to freely download 3 ITU-T Recommendations from the ITU-T >website. >Check "I wish to REGISTER in order to download up to three (3) >Recommendations >free of charge" at: http://ecs.itu.ch/cgi-bin/ebookshop >and then download the X.680 and X.690 series. > > > It seems like there's enough free stuff to "read between the lines" on >it, > >True (there are even books on ASN.1 who are freely available, as well as >the ASN.1 standards, as I already mentioned). >But be careful and don't trust any URL on the web! > > > but it takes some dedication. > > > > Here's a handful of relevant links I dug up: > > > > http://xml.coverpages.org/xer.html > > http://dsv.su.se/jpalme/abook/comparison.pdf > > http://www-sop.inria.fr/rodeo/personnel/hoschka/asn1.html > >Hoschka's page has not been updated for a lot of time AFAIK. > > > >http://www.dict.org/bin/Dict?Form=Dict2&Database=*&Query=Abstract+Syntax+Notation+1 > > http://www.oss.com/asn1/overview.html > >You've missed: http://asn1.elibel.tm.fr/ ;-) >-- >Olivier DUBUISSON (ITU-T ASN.1 Rapporteur) >france telecom R&D > _ DTL/MSV - 22307 Lannion Cedex - France > ( ) tel: +33 2 96 05 38 50 - fax: +33 2 96 05 39 45 > / \/ -------------------------------------- > \_/\ Site ASN.1 : http://asn1.elibel.tm.fr/ _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com
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