Subir,
Please find inline replies.
Regards,
Ajoy
Along that line more data on XML will be better
for understanding which query
language is good for .21 IS . All along we have said that XML is
a candidate query lanaguage given the type of model
and flexibility we need to support in .21 IS framework. It will
be good if you share some of your practical experience
and related informtion on XML as well..
Ajoy-> I think
the attached link does talk about performance issue associated with XML.
http://www.zapthink.com/report.html?id=ZAPFLASH-11162004
Personally I have
not done any work in the XML performance analysis, but I have looked
at other
compression technologies and have herd concerns raised about the
performance impact
of compression mechanism such as SIP compression on mobile devices.
Also is it not true that XML is already on the
mobile devices?
Ajoy-> At least
I am not aware of availability of XML at L2, L2.5 and L3 protocol
layer processing. Typically
L2 and L2.5
processing is done by DSP and I am not aware of any XML component in that.
However.
I am aware of the
fact that WAP has used some variation of XML also known WML. But it has NOT
been considered
very successful
technology either. Also, note that available channel for handover signaling
may not be as much as
available data path
for WAP.
.
My feeling is that we don't have enough
data so that we can say that XML is bad.
Ajoy-> See above
link. Although above link is not related to mobile devices, but definitely
provides some interesting data about XML.
For example it
states that size of XML encoded message can be 10 to 50 times bigger than
binary encoded message.