What is a good database for very large collections? (was Re: XSL/ECMAscript (was RE: Frontier as a scalable XML repository (was Re: Is XML dead already or what?))

[Rick Jelliffe]

 From: Simon St.Laurent <simonstl at simonstl.com>

>This thread(s) has proven more capable of shifting subjects than any
I've
>seen in a while ...

Can I try to shift it back to a vital question asked earlier, but not
answered?

What is a good database for XML?

The criteria are:
    * over 20, 000, 000 document fragments, each less than 256
characters, each with some flat metadata, able to be incrementally
reloaded onto the live system
    * about simultaneous 30 users accessing about 10 fragments a minute
each, grouped together (along with other dynamic data) and transformed,
with a high need for immediate response
    * constant data-mining tools using various adhoc AI and linguitic
retrieval software augmenting the metadata in the background.

Rick


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