Think Java interfaces.

Paulo Gaspar

On 2008-06-25, at 15:45, Jim Starkey wrote:

> scott_michael_meyer wrote:
>> So why not scrap inheritance altogether and work with
>> identities and properties of identities (values or
>> relationships to other identities)? As it happens,
>> I have a working example of such a system, freebase.com.
>>
>> If you consider an interesting identity:
>>
>> http://www.freebase.com/view/en/arnold_schwarzenegger
>>
>>
>
> Scott, I'm not ignoring your interesting post, I'm thinking about both
> it and Philip's recent post on multiple inheritance.
>
> The argument, as I see it, is that types don't necessarily fall in a
> simple hierarchy. The example is Schwareznegger, who has a base
> identity of a person but who is also an actor (well, sort of), a
> politician, and a retired model, and while actors and politicians are
> not strictly unrelated, neither can be said to inherit from the other.
>
> I'm convinced that the object model doesn't work for databases; the
> death of a dozen OO database companies pretty much catalog the
> manifest
> problems. But the idea of extending the relational model to increase
> the flexibility of data is well worth exploring.
>
> --
> Jim Starkey
> President, NimbusDB, Inc.
> 978 526-1376
>
>
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