> > This is allways something I've had a problem understdaning.
> > If you go to a
> > pure object model how do you get your objects to be persistent into a
> > relational db, like Interbase?
>
> There are many ways to achieve this.
>
> 1. Stream your properties into blob fields.
> 2. Variant of (1), in addition to streaming, save your key fields into
> "real" relational database fields. This will solve the foreign key
> problems.
>
> The problem with (1) and (2) is when it comes to generating reports.
...and searching for data by anything other than the primary key gets kinda
tough too!
> 3. Write a translator to map your properties to fields in the DB. This
is
> a lot more work, but solves the problems in (1) & (2). However, you will
> need to update your translator / DB if you make changes to fields in your
> business objects.
You might want to take a look at http://www.cam.org/~mibra/spider/odb.html
If you do, *please* report back here with an opinion. I've not looked at
it -- I just know that it exists.
> > Should I just dump Delphi and use Jade?
So you can take advantage of the huge developer community? :-)
> If you must go the JADE way, I would rather use one of those Java OO-DBs.
Or Java with an O/R mapping tool, like TopLink.
Cheers,
Kerry Sainsbury
Inprise/Borland New Zealand
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