Re: DES2K ERD - Transferable Relationships
Date: 1997/11/15
Message-ID: <346ef3a4.10323980_at_nntp.ix.netcom.com>#1/1
"Transferable" determines if the resulting foreign key columns are updateable; this will be enforced on the client side only. You will see a similar property in your constraints dialog.
Allowing relationships in UIDs to be transferable is indeed a violation of the rules.
Robert Siegel <robertsiegel_at_compuserve.com> wrote:
>Does anyone know what are the downstream implications of whether a
>relationship is transferable. I cannot find anything in the
>documentation about this.
> The tool defaults to making all relationships transferable. It also
>indicates transferability on the parent end which does not make any
>sense to me because there will not be a foreign key column in the
>physical table to change the value of to make the transfer in the
>physical/real database table. The tool also seems to allow a
>relationship that is part of the unique ID to be transferable. That
>violates what I know about Oracle database tables that a primary key is
>not updatable.
> So what is the bottom line on all of this.
-JJ
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Received on Sat Nov 15 1997 - 00:00:00 CET