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Re: storage Structure
Wenzel Forster wrote:
>
> On Thu, 5 Apr 2001 10:29:51 +0200
> Falko Braeutigam <falko@smb-tec.com> wrote:
>
> > On Wed, 04 Apr 2001, Margit Lang wrote:
> > > Hi,
> > > I am a student from Austria and have a question about the database
> structure
> > > used in ozone. What kind of database is it exactly?
> > Can you be more specific? What exactly do you want to know???
> >
> > > And how are especially
> > > XML files stored in the database?
> > The current version uses one database object for each DOM node and
> clusters
> > those DOM nodes just like any other database objects. Wenzel is about to
> play
> > with some other approaches in order to come up with a design that is
> faster
> > and scales better. Wenzel, any news?
>
> No news yet, still looking at the fundamentals. But I'll let you know as
> soon as they come up.
>
> > > Are there any connections of ozone to the
> > > project Lore (from Stanford university)?
> > No.
>
> There are a couple of basic differences between ozone and Lore affecting
> their usability: Lore is a finished research project and therefore
> maintenance is discontinued. On the other hand ozone as being constantly
> worked on. But what really makes the difference is the fact that ozone is
> open source and free to use in any circumstances (not just evaluating,
> personal use or similar).
>
> At Stanford's Lore project they also mention their 'Ozone' project that is
> (was?) built on top of O2. But I've not seen anything about this 'Ozone'
> being used anywhere. Are maybe the people at INRIA / Xyleme(SA) using this
> technology? Wouldn't be surprising, but I haven't got a clue.
>
> This leads me to another point, now referring to ozone/XML: besides the
> couple of projects mentioned on the website I don't know if anybody is
> really using it. Would be nice to know about some real usecases. This
> is probably one of the drawbacks of not dealing with a commercial product
> where you might just go through your list of licensees. But even them commercial
> vendors only seem to be 'able to do everything and really fast'. So I'm
> just hoping to see some XML benchmark results in the near future.
I'm very interested in using the XML portion of ozone. This is as close
to a schema-less system as you could get for structured data. I tried
out the example today and even did a XPath query on the loaded file. XML
databases are a pretty hot topic and I'm sure ozone will be one of the
fastest. The trouble is that you have to know Java, XML, XSLT/XPATH,
SAX, DOM plus ozone for it to be of interest. It's not immediately
obvious why someone want such a beast at least for mortals(like me).
I'll be in touch on this subject.
Eric :-)