Re: Jasmine an OODBMS ? (Was: Re: troubles experience?)
Erlend Bjorge <erlend-b@spam_yourself.ifi.uib.no> wrote in article <35C5BE0F.64DE@spam_yourself.ifi.uib.no>... > Hi there ! > > > >Hang on a minute though. Jasmine has a relational storage > > >manager AFAIK. How come it is an ODBMS then? > > > > > ??? Jasmine is an Object oriented database (aka OODBMS), whats this > > about having a "relational storage manager"? I haven't seen anything > > "relational" about it in the last 12 month's I've been playing with > > it? > > Michael Kay, gave me this explanation one time: > > http://www.dejanews.com/getdoc.xp?AN=346046896 > > It's data model is object-oriented (as we all "know"), but on the bottom > it act more like a RDBMS. hmmm Thanks Erlend. I've just emailed Mike to explain in detail what type of storage manager is used (i.e. if it is Relational or if CA have re-written it and now have something totally new). > > Maybe that's why it don't support object clustering because > it _can't_ ? IMV: One of Jasmines disadvantages, beside it's > full automatic class extent feature (which can mean less > performance). > > Any comments on this ? > > (remember that Jasmine use extent in anohter way than > ODMG-93 (extent) define it, and "I" use it). > > > On the other side, not many > OODBMS has CA behind them, > and they are comming fast ! :-) I read somewhere recently (I will try and dig-out the article - give me a day or two) that Charles Wang (top man at CA) claimed that Object-Relational DBMSs were "arse-backwards"! (sorry to be rude - his words, not mine). It would be nice to see how a product that uses a Relational Storage Manager can be classed as an ODBMS then (but maybe I pre-empt what Mike Kay has to say). "Earth calling Mike Kay... Where are you Mike?" > > > Hope this helps ! > > Take care, > Erlend > -- akmal ....................................................................... . Dr. Akmal B. Chaudhri, Object Technology Specialist, Logica UK Ltd. . . e-mail: akmal(at)bigfoot(dot)com http://www.bigfoot.com/~akmal/ . . Any opinions expressed are mine and not necessarily those of Logica . .......................................................................