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Mueller Markus

unread,
May 14, 1996, 3:00:00 AM5/14/96
to

Hi folks,

We are looking for an object oriented database. Is anyone who
can recommend an OODB ? Where I get informations ?

Tanks for reply,
Best regards

Markus MUELLER

computer scientist B Sc/
project manager

------------------------------------------
r3 security engineering ag
Zuerichstr. 151
CH - 8607 Aathal, Switzerland

phone +41 - (0)1 - 934 56 34
fax +41 - (0)1 - 954 56 57
e-mail markus....@r3.ch
------------------------------------------

Scott Wheeler

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May 15, 1996, 3:00:00 AM5/15/96
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In Article <319887...@r3.ch> Mueller Markus writes:
>Hi folks,
>
>We are looking for an object oriented database. Is anyone who
>can recommend an OODB ?

You need to be more specific to get a useful response - what language
are you using, do you need a multi-user system, do you want an
interactive design environment, what is your budget, how important are
standards such as CORBA and OSQL to you, etc.

We have used two low-end C++-specific ODBMSs: POET and NeoAccess. At
this end of the market, external standards are not implemented,
database objects correspond almost exactly to C++ objects, and you will
probably have to manually work a reference counting system to let the
database know when the in-memory copy of an object is finished with.

We had a lot of trouble with POET on our Sun and couldn't get it to
work at all on our SCO Unix systems (even the examples wouldn't work):
tech support from Germany was abysmal. However this was with early
versions (1 and 1.01, I think): they are now to version 3 and one
person whos judgement I trust is enthusiastic about it. I think they
have been concentrating their efforts on the Windows version.

More recently we used NeoAccess (http://www.neologic.com/~neologic),
which is distributed in source form. The licence is for one
*developer*, who can compile on multiple platforms including Windows.
This is quite a bare-bones system and our developer had some problems
with the documentation (this is about a year ago). Performance was
considerably better than POET, particularly the way it scaled with
database size.

>> Where I get informations ?

You could try Bertino and Martino, "Object-oriented database systems",
Addison-Wesley, 0-201-62439-7. This was published in 1993, so it will
be a bit out of date: I don't think it covers ObjectStore for instance.
It does not attempt to cover the lower end of the market at all.

Scott

Akmal B Chaudhri

unread,
May 19, 1996, 3:00:00 AM5/19/96
to

On Tue, 14 May 1996, Mueller Markus wrote:

> Hi folks,
>
> We are looking for an object oriented database. Is anyone who

> can recommend an OODB ? Where I get informations ?
>
> Tanks for reply,
> Best regards
>
> Markus MUELLER
>
> computer scientist B Sc/
> project manager
>
> ------------------------------------------
> r3 security engineering ag
> Zuerichstr. 151
> CH - 8607 Aathal, Switzerland
>
> phone +41 - (0)1 - 934 56 34
> fax +41 - (0)1 - 954 56 57
> e-mail markus....@r3.ch
> ------------------------------------------
>
>

Markus,

I may have already emailed you on this one, but one place to get info on
books, commercial reports and paper references is at:

http://www.city.ac.uk/~ad533/html.dir/index.html

These pages are mirrored at a number of locations around the world,
including Germany (courtesy of sd&m).

Cheers,

--
Akmal.

_ ___________________________________
//)| |
/ / | http://www.soi.city.ac.uk/~akmal/ |
_( (_ | mailto:ak...@sarc.city.ac.uk |
(((\ \>|_/()_______________________________|
(\\\\ \_/ /
\ /
\ _/ "If I hear the phrase 'everything is an object' once more,
/ / I think I will scream."
/___/ - Mike Stonebraker (1988)


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