Since we're talking about databases...

Clark Evans clark.evans at
Tue Feb 2 01:33:27 GMT 1999

I'm rather new to the list.  I was wondering if there is any
current (open source?) work for storing XML in relational 
databases.  I was thinking of using PostgreSQL.

Thoughts: (I've read almost everything on Robin Cover's site)

a) I've been reading everything I can on XML and see a big
opportunity to have a standard based upon formal systems.
The forest automata papers are expecially exciting, now I 
regret goofing-off during computational complexity...
Anyway, I'd love to see/learn more on this aspect of XML 
before I jump head first into coding. Any more pointers?

b) The XML Archetectures seems to be the right way to 
go from my understanding of the readings, thus any 
database would have to support this.  Is this the
concensus or are their vaired opinions?  

c) GROVES look pretty cool.  Is there anyone working
on a xml property set? Would it be smart to implement
an xml database upon the groves abstraction, or would
a direct (DOM) based implemention be better? 

d) How hard would it be to develop a transition/rewrite
engine (say by modifying JADE) to work using a database 
store instead of memory?  Thoughts?  Any work in 
this area?

e) Is there any thoughts on a XML transport layer
(instead of using CORBA), based upon SMTP and POP3
or equivalent?  I was thinking more along the
lines of LISTSERV, where message logistics are 
handled in a smart way.  

f) Has anyone proposed a standard SQL 92 RDBMS mapping? 

:) Clark Evans

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