[Z3-zemantic] Re: big zemantic storage / some changes

[David Pratt]

Hi.  I am new to the list and semantic web but I have had an interest 
for quite some time and been reading a fair amount over the last few 
years.  I am currently working with Zope 2.7 and am wondering whether 
there is something that I could try to work at the Zope 2.7 level this 
way because I am trying to figure a way to tie together the rdf 
resources generated in multiple sites into a single store and something 
that could work as a product.  What version of rdflib are you working 
with at present?

I found a scrap that suggested that someone was working on something 
that might work for Zope2

Anyway it got me thinking about your post with the email.  I have been 
doing some things like this already to keep memory requirements for 
zope low and to speed access by using Postgres.  Also, a fellow in the 
UK has developed a nice mailmanager application in zope that he is 
continuing to refine and is now writing for postgres backend as well 
since I think also in his app there are concerns of speed, memory and 
what millions of records can do to the size and usability of a zodb 
without lots of horsepower.

Regards
David


 From your post ...

But if zemantic will be based on some kind of external catalog, maybe I
could also use this catalog to store raw datas for each mail. the idea
would be to be able to link regular ZODB objects to properties which
values would be stored outside Zope.

I'm pretty sure a bit of magic is possible to bind some zope object
attributes to an external storage and hide them from zodb.

I  have the feeling that this would speed up things a lot but my
knowledge of ZODB is not good enough to be sure what i am saying is not
totally wrong.  :)