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RE: XML Binary and Compression

binary to ascci
Do you regard office file formats as binary? To me they are application
specific file formats. Even so, is your comparison of these file formats
with XML a lossy comparison? That is does the XML version include all the
application specific information needed to recreate the application file or
is it limited strictly to the data content? 

- Dan 

> -----Original Message-----
> From: Elliotte Rusty Harold [mailto:elharo@m...]
> Sent: Tuesday, March 11, 2003 9:55 AM
> To: winkowski@m...; msc@m...; xml-dev@l...
> Cc: winkowski@m...; msc@m...
> Subject: RE:  XML Binary and Compression
> At 11:54 PM -0500 3/10/03, winkowski@m... wrote:
> >The military has been building binary messages optimized for 
> size efficiency
> >for decades. Our group has been working over the past 
> several years to
> >express a variety of messages, some based on binary 
> specifications and some
> >delimitated ASCCI, in XML. In all cases the XML version of 
> these messages
> >are larger than the original binary or ASCII. Is this 
> surprising? I don't
> >think so - metadata is not transmitted in either binary or 
> delimitated ASCII
> >formats. You state that the fact that binary files are 
> smaller than the
> >equivalent XML is decidedly untrue based on your experience. 
> Quite frankly
> >this surprises me. Our own experience is just the opposite.
> Very possibly then we're working in different environments with 
> different kinds of data. I routinely work in the desktop space and 
> occasionally work in the desktop space and occasionally on the 
> server. Some developers who work with embedded systems have pointed 
> out to me that my experience colors my perceptions, as theirs colors 
> theirs.
> I suspect you're working with very different software and file 
> formats than I am. For instance, based on what you report I 
> hypothesize that you're not working with relational databases or 
> office documents like spreadsheets and word processor files, or you 
> could hardly have avoided noticing that XML is more efficient in 
> practice than binary formats. But I don't know what you are working 
> with, and I don't know in which environments your results are 
> relevant.
> -- 
> +-----------------------+------------------------+-------------------+
> | Elliotte Rusty Harold | elharo@m... | Writer/Programmer |
> +-----------------------+------------------------+-------------------+
> |           Processing XML with Java (Addison-Wesley, 2002)          |
> |              http://www.cafeconleche.org/books/xmljava             |
> | http://www.amazon.com/exec/obidos/ISBN%3D0201771861/cafeaulaitA  |
> +----------------------------------+---------------------------------+
> |  Read Cafe au Lait for Java News:  http://www.cafeaulait.org/      |
> |  Read Cafe con Leche for XML News: http://www.cafeconleche.org/    |
> +----------------------------------+---------------------------------+


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