Re: more closed-world chatter
From: Jon Heggland <jon.heggland_at_idi.ntnu.no>
Date: Mon, 07 May 2007 13:15:57 +0200
Message-ID: <f1n1sl$imu$1_at_orkan.itea.ntnu.no>
>
> Is that the one that says the type of an attribute in the result
> of a join is the most common specific supertype? If so,
> yes I am familiar, and no, I can't reconcile it. I don't see
> any reason to prefer a type that's more general than necessary.
Date: Mon, 07 May 2007 13:15:57 +0200
Message-ID: <f1n1sl$imu$1_at_orkan.itea.ntnu.no>
Marshall wrote:
> On May 6, 11:21 pm, Jon Heggland <jon.heggl..._at_idi.ntnu.no> wrote:
>> Are you familiar with TTM's IM prescription 13: Join etc. with >> inheritance? Are you able to reconcile your preference with that?
>
> Is that the one that says the type of an attribute in the result
> of a join is the most common specific supertype? If so,
> yes I am familiar, and no, I can't reconcile it. I don't see
> any reason to prefer a type that's more general than necessary.
-- JonReceived on Mon May 07 2007 - 13:15:57 CEST