[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: binaries in xml schema?

  • From: John Cowan <cowan@l...>
  • To: XML Dev <xml-dev@i...>
  • Date: Wed, 21 Apr 1999 13:46:21 -0400

binary in xml
xml wrote:

> Knowing that the data format will be used to store binaries anyway in
> embedded markets, I have to wonder if there is a formalized way to solve
> the problems in embedding binary in XML documents.  Because it is going to
> happen... there can't be any question about that.

Binaries will have to be encoded before being embedded, period.
Anything else isn't XML.  After all, what prevents the binary
from containing < or &, never mind any of the illegal characters
in the 00-1F range?
 
> I understand that a schema mechanism is being added to XML.  I don't know
> anything about it... haven't been able to find anything yet.  But, if a
> schema is available in the file with the XML datasets, several binary datatypes
> should be able to be called out.  This would make the MIME-happy folks happier
> and help us build xml-compliant consumer electronic blocks that are affordable.

Sure.  With or without schemas, you can tag elements as containing
base-64 encodings of any MIME type you want.  But there has to be
an encoding, not raw binary bits.

> So... is there any public information about XML-Schema?  Any idea if one or
> more binary formats is called out as a datatype within it?

You can read the various W3C Notes: XML-Data, DCD, SOX, DDML.
None of them tolerate raw binary.  Several provide a datatype
tag for base-64-encoded octets.

-- 
John Cowan	http://www.ccil.org/~cowan		cowan@c...
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)


PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.