PDOM is a necessity...

• To: ozone-users@ozone-db.org
• Subject: PDOM is a necessity...
• From: Ann Tecklenburg <at@ingenuity-sw.com>
• Date: Tue, 26 Oct 1999 17:07:10 -0700
• Organization: Ingenuity Software
• References: <99102614211802.00948@sheepy> <3815DF40.A165FC9B@ingenuity-sw.com> <3815F917.DB54FE25@dyomedea.com> <9910262153550C.00948@sheepy> <009101bf1ff0$3c05fa20$5df5c13f@PaulTchistopolskii>
• Sender: root@smtp.inreach.com

As you know, I have been investigating both
the theory and practice of this for a while now.

It appears that a fast implementation of
a query engine will store a transformed
and compiled version of both the query
and the Document.   Ultimately some
variation of "magic-sets" transformation
will be required.  Also, caching of nodes.

GMD-IPSI has a good PDOM and caching
implementation.

So far, *no one* has done magic-set
transformations on XPath or XQL.

For now, I'm going to settle for alot less
speed however and just get something working.

/**/

Now you know why top quality DB engines
cost so much money.

Best Wishes,

Ann Tecklenburg

• Follow-Ups:
  • Re: PDOM is a necessity...
    • From: Zvi Avraham <zvia@netmanage.co.il>

• References:
  • Re: Fwd: XML Server
    • From: Ann Tecklenburg <at@ingenuity-sw.com>
  • Re: Fwd: XML Server
    • From: Eric van der Vlist <vdv@dyomedea.com>
  • Re: Fwd: XML Server
    • From: Falko Braeutigam <falko@softwarebuero.de>
  • Re: [xml-server] Re: Fwd: XML Server
    • From: Paul Tchistopolskii <pault12@pacbell.net>

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