Re: Updateable views...

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От Curt Sampson
Тема Re: Updateable views...
Дата
Msg-id Pine.NEB.4.51.0303060128180.530@angelic-vtfw.cvpn.cynic.net
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Ответ на Re: Updateable views...  (Eric D Nielsen <nielsene@MIT.EDU>)
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On Wed, 5 Mar 2003, Eric D Nielsen wrote:

> I see how that is what the spec says, but aren't the majority of joins that
> people use/want to update a join of some type?  I thought that SQL99 allowed
> updating view created by joins.
>
> In either case is this a place where "exceeding" the spec would be a good
> thing or a bad thing?

This is a case where exceeding the spec would be a very good thing.
And there has been lots of research on how to make more complex views
updatable; see Date's _Introduction to Database Systems, 7th Edition_
for an in-depth discussion of this.

That said, one step at a time is always good, and even having just the
very simplest views updatable would be a very nice thing.

cjs
-- 
Curt Sampson  <cjs@cynic.net>   +81 90 7737 2974   http://www.netbsd.org   Don't you know, in this new Dark Age, we're
alllight.  --XTC
 


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