Re: Multiplicity, Change and MV
Date: 12 Apr 2006 07:08:16 -0700
> This difficulty has been long recognized as a consequence of the
> EAR approach to database design. Since Chen's first paper, it's
> been apparent that neither "entity" nor "relationship" were
> fundamental concepts.
I have been referring to that fundamental concept as a "thing" in the
most general sense (which has provided c.d.t. members with an endless
sources of ridicule for years).
> data, not relationships. In that vein, I've found Halpern's ORM
> approach to be helpful -- although his goal of discovering objects
> is, I feel, slightly off the mark.