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Re: Date of Birth as an attribute

From: Alan <alan_at_erols.com>
Date: Wed, 7 Apr 2004 09:49:52 -0400
Message-ID: <c510tr$2o2ihj$1@ID-114862.news.uni-berlin.de>


It is always entirely subject matter dependent at the logical level (ERD). It only has the opportunity to become otherwise during the conversion from the logical to the physical.

"Laconic2" <laconic2_at_comcast.net> wrote in message news:fpKdnXkp8Z2QmOnd4p2dnA_at_comcast.com...
> It strikes me that the connection between attributes and entities (or
> relationships) is more subject matter dependent than a lot of us like to
> admit.
>
> For example, "date of birth" is an attribute of a person in a personnel
> system.
>
> But it's an attribute of a birth, in a birthing center.
>
> Your thoughts?
>
>
Received on Wed Apr 07 2004 - 08:49:52 CDT

Original text of this message

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