DM Unseen wrote:
> On 3 jul, 00:24, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
>
>>Senges wrote:
>>
>>>hi list,
>>
>>>i know about the basic distiction of data modelling as i heard it in
>>>my db couse:
>>
>>>* semantic model --> ERM
>>>* logical model --> relational schema / XML schema
>>>* physical model --> hash tables / how to handle stuff on the
>>>harddisk
>>
>>>and i heard about the conceptual modell / conceptual schema /
>>>conceptual modelling. however:
>>
>>>* sometimes the semantic modell is explaint to be a conceptual modell,
>>>or .. conceptualization leeds to a semantic modell.
>>>* sometimes the logical modell is explaint to be a coceptual one (this
>>>way we learned it in our course).
>>
>>>Now i'm writing about ontologies defined as, "a specification of an
>>>explicit conceptualization".
>>>Would you think this "conceptualization" refers to the semantic oder
>>>the logical model?
>>
>>>thanx for any help,
>>>chris
>>
>>Hi Chris,
>>
>>If you use conceptual model as a synonym for semantic model, I think you
>>will translate your teachings into normal usage well enough. However,
>>while ERM is certainly popular, I think better conceptual modelling
>>methods exist.-
>
> Bob, chris,
>
> as a conceptual model I always look at NIAM based solutions like ORM
> or FCO-IM. These methodologies represent information based on
> vebralization, i.e. what is expressable(in the UoD) can be moddeled.
>
> DM Unseen.
Yes, those are certainly the better methods than ERM that I referred to.
Received on Tue Jul 03 2007 - 06:29:47 CDT
