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Re: Other Ozone XML/OODB

Pedro,

you are not right, XML is very usefull on the server-side,
think about thin-clients (browsers, smartphones, etc...), which have not local
XML/XSL/XQL processing capabilities.
Mainstream browser still not supporting emerging XML standards...

Pedro Pastor Seva wrote:

> >From my knowledge and experience in XML and databases, trying to produce
> a persistent DOM is not a good strategy. The main point to discuss is:
> what is DOM good for ? I will not see DOM in the server tier, I'd rather
> use DOM for client applications.
>
> If I am designing an application for my organization I don't think in
> terms of DOM-data-structure, I'll design my own OO-data model and I'll
> build it in an OO-DB. Afterwards, if you like to publish part of your
> data model to a foreing client, then you should generate an XML file or
> its equivalent binary standar (DOM) to be delivered (if the client were
> in-hose I'll keep in my objectual system). I think Dom is for standar
> client processing (a client could be another, foreing, server).
>
> The client could, then, use XML-QL, XQL, XSL, or whatever other query
> language for local processing. But for my local (in-hose) applications
> accesing my OO-DB I'll stick to ODMG 2.0 OQL.
>
> There are some other important issues open, like: how to translate the
> DTD (XML scheme) to an OO-data-model, I think we should relay in OQL.
>
> I am very enthusiastic with XML, BUT it is good only for what is good,
> and nothing more.
>
> Falko Braeutigam wrote:
> >
> > Zvi Avraham wrote:
> > >
> > > I first heard about Ozone from Cocoon mailing list,
> > > then I started to search on Altavista for "Ozone XML object database"
> > > I first found O2, and then only your Ozone.
> > Then we will keep up the name ;)
> >
> > >     I'm looking for cheaper alternative for Object Design XML Data Server,
> > > b/c I'm not in a mood to pay $15000 per CPU ! I need PDOM and XQL
> > > functionality.
> > Unfortunately I do not know much about the XML stuff. But so far it seems to
> > be no problem to make a persistent DOM with ozone. But I'm confused about the
> > query languages. Can somebody clarify this a little bit? I've forwarded the
> > posting to Vincent.Aguilera also. Could his X-OQL be an option?
> >
> > > What about DOM implementation, when every Node object will be
> > > also implement Serializable and Remote interfaces ?
> > Yes, this is the way. But because of the central object activation of ozone it
> > could be a pretty overhead to access every Node object via RMI. So far I see
> > two ways to solve this problem: First is to cluster Node objects and second is
> > to put much of the code which accesses the DOM into the ozone server.
> >
> > Falko
> >
> > --
> > ______________________________________________________________________
> > Falko Braeutigam                         mailto:falko@softwarebuero.de
> > softwarebuero m&b (SMB)                    http://www.softwarebuero.de

--
-------------------------------------------------
Zvi Avraham, Senior Software Engineer
NetManage Inc., Visual Connectivity Division
http://www.netmanage.com/products/visual_conn.asp


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