Re: Objects and Relations
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Wed, 21 Feb 2007 21:17:39 GMT
Message-ID: <TF2Dh.9165$R71.141395_at_ursa-nb00s0.nbnet.nb.ca>
>>[snip]
>>I still think we have a quite different understanding of what (in
>>practical terms) we mean by "entity". I think you're still
>>associating it with ERMs (even if you distinguish instance from type)
>>while I'm not. Let me explain what I mean by that...
>>
>>You question whether written papers have an authors property or vice
>>versa. For me that question only arises at the point where you try
>>to create an ERM.
Date: Wed, 21 Feb 2007 21:17:39 GMT
Message-ID: <TF2Dh.9165$R71.141395_at_ursa-nb00s0.nbnet.nb.ca>
JOG wrote:
> On Feb 20, 2:18 pm, "David BL" <davi..._at_iinet.net.au> wrote: >
>>[snip]
>>I still think we have a quite different understanding of what (in
>>practical terms) we mean by "entity". I think you're still
>>associating it with ERMs (even if you distinguish instance from type)
>>while I'm not. Let me explain what I mean by that...
>>
>>You question whether written papers have an authors property or vice
>>versa. For me that question only arises at the point where you try
>>to create an ERM.
> > Well yes I do see that. But I /don't/ think those issues start at the > ERM, so I'm more than happy to address things outside the E/RM, at a > 'real world' level (apologetic quotes for obvious reasons).
Hey, it's pretty clear to me: authors and papers are properties of the ISBN entity. Received on Wed Feb 21 2007 - 22:17:39 CET