Re: A question for Mr. Celko

From: Jan Hidders <jan.hidders_at_REMOVETHIS.pandora.be>
Date: Tue, 20 Jul 2004 21:14:09 GMT
Message-ID: <pan.2004.07.20.21.14.55.18862@REMOVETHIS.pandora.be>

On Tue, 20 Jul 2004 18:15:29 +0100, Paul wrote:
> John Jacob wrote:

>> [...] What about UNNESTing a relation-valued attribute is different
>> from extraction? [...]

>
> UNNESTing is part of the relational engine whereas extraction is part of
> the type engine?
>
> So from the point of view of the relational engine the value should be
> atomic, but from the viewpoint of the type engine this doesn't have to
> be the case.

Well put! :-) Do you require more explanation John?

• Jan Hidders

Received on Tue Jul 20 2004 - 16:14:09 CDT