Death to recursion! Re: Child vs parent records
Ruslan Zasukhin
sunshine at public.kherson.ua
Sun Dec 11 17:31:06 CST 2005
On 12/11/05 5:19 PM, "Ed Kleban" <Ed at Kleban.com> wrote:
>
> Unlike CreateForeignKeyLink, the CreateBinaryLink command can create 1:1,
> 1:M, M:1, and M:M relations ships -- as you have frequently pointed out to
> me. In this more generalized definition the concepts of "Parent" and
> "Child" are less clear, may be irrelevant, and I would argue only offer an
> opportunity for more confusion.
IF BinaryLink is type 1 : M THEN we can use Parent-Child terminology.
No difference to FK.
But for M : M this not works! Right.
Also note, that 1:1 (binary) link and M : M link on default do not know
which table is owner.
* Usually in 99% any of them is NOT owner.
* we have symmetry
* But if your task require you still can specify OWNER
--
Best regards,
Ruslan Zasukhin
VP Engineering and New Technology
Paradigma Software, Inc
Valentina - Joining Worlds of Information
http://www.paradigmasoft.com
[I feel the need: the need for speed]
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