Your problem is a Object/Relational Mapping (O/R) problem.
and the answer is not simple because there are several strategies to map an
inheritance link into a relational DB...
you should have a look on products that make the O/R mapping for you as
CocoBase or Toplink or...
or have a Object DB as Poet.
is Anyone know opensource project on O/R mapping ?
-----Message d'origine-----
De : Tom Lepski <[EMAIL PROTECTED]>
� : [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date : 07 August 2000 16:07
Objet : A design question...
>Consider that I have two classes Car and SportsCar where SportsCar extends
>Car. Now, the system has objects of both classes. I want to model this
>relationship in entity beans. How should I go about it? Can I have two
>entity bean classes.. CarBean and SportsCarBean? Ultimately both objects go
>to the database table(s), so how would the mapping work? Can two ejbeans
map
>to same table?
>Sorry for too many questions but I'm really confused. Uptill now I have
only
>seen examples that dealt with simple beans. None of the examples dealt with
>such kind of situation.
>
>Please help.
>-Tom
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