Re: eXelon performance

[Ann Tecklenburg <at@ingenuity-sw.com>]

I might add that I talked to an IBM DB2 developer and
they are not doing anything special about optimizing
XPath queries in DB2 at present.  Literally, the
DOM elements are stored in the database and either
treated as normal tables and columns and queried with
SQL or the XML is exported and parsed and
queried via XPath, externally (or something like that.)
They are *not* doing any real optimization of an XPath
query and don't seem to be doing any serious work about
such at present.

(At one time we had discussed doing a sophistocated
magic set or GA optimization, but we have abandoned
this for complexity and lack of time.)

Best wishes,

Ann Tecklenburg