Re: CREATE TABLE with REFERENCE

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От Jonathan Bartlett
Тема Re: CREATE TABLE with REFERENCE
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Msg-id Pine.GSU.4.44.0307281353580.8808-100000@eskimo.com
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Ответ на Re: CREATE TABLE with REFERENCE  (Dmitry Tkach <dmitry@openratings.com>)
Ответы Re: CREATE TABLE with REFERENCE  (Dmitry Tkach <dmitry@openratings.com>)
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> >Why not just drop the "references" clause?  I mean, the point of having
> >transactions is to guarantee integrity within a transaction, if you're not
> >going to have that, why even bother with the clause?
> >
> Quite the opposite - the point is to guaratee the integrity *outside*
> the transaction.

That's actually what I was saying.  Within a single transaction rather
than across multiple transactions.  If you have to go across multiple
transactions, there's no real point in having integrity constraints.

> >Most of my databases don't even user "references", just because I like the
> >flexibility, and I have multitable keys (keys that can refer to rows from
> >multiple tables).
> >
> >
> Not much to brag about :-)

Do you know of a better way to handle multitable references?

Jon

>
> Dima
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: the planner will ignore your desire to choose an index scan if your
>       joining column's datatypes do not match
>


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