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- From: "Stephen D. Williams" <sdw@lig.net>
- To: "Lippmann, Jens" <LippmannJ@mmanet.com>
- Date: Mon, 05 Apr 1999 20:50:55 -0400
This is among the problems that I'm trying to address with what I was calling 'bXML' or
'binary XML' and which I'm not considering calling 'sXML' (collision?) or 'bsXML' as in
'structured XML' or more appropriately: 'binary structured XML'. Comments please!
As you can see in previous posts, the idea was to maintain XML functionality but use a format
that had structured encoding in flat character blocks that would allow fast searching and
traversal.
This will be a good test when ready to benchmark, pending.
sdw
"Lippmann, Jens" wrote:
> Following the XML for the last couple month, I am surprised how little
> attention is paid to performance. My optimistic personality leads me to the
> conclusion that performance is not an issue. :)
>
> However, I would be very interested on an expert's guess on the following
> problem:
>
> Assume the following XML document:
>
> <PORTFOLIO>
> <ACCOUNT MANAGER="Joe Smith" ID="000001">
> <AUDIT DATE="03/31/1999">
> <SECURITYDESC>
> <SECURITY>
> <CUSIP>0815</CUSIP>
> <PRICE CURRENCY="US">4289.23</PRICE>
> <TRADEDSHARES>4289.23</TRADEDSHARES>
> </SECURITY>
> </SECURITYDESC>
> </AUDIT>
> </ACCOUNT>
> </PORTFOLIO>
>
>
> Each document will contain about 10^4 <SECURITY> elements each will contain
> between 10 - 10^2 child tags, and I have to handle about 10^2 documents a
> day, i.e. we're dealing with 10^7 to 10^8 tags. So far, the benchmarks I've
> got are pretty devastating. I have to visit every sub-element
> of <SECURITY> at least once during the number crunching and I cannot keep
> everything in memory. I am considering one of the XML repositories to help
> me with the job.
>
> Any comment would be much appreciated.
>
> Jens
>
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