Re: Reverse key indexes

I haven't either.

The only make sense in a high activity OLTP database, and my OLTP experience is with 50 users and less. I dont' think most DBA's are on high activity OLTP systems anyway, so you don't hear too much about this kind of stuff.

Jared

On Friday 11 May 2001 23:57, Vikas Kawatra wrote:
> Thanks Jared ! What I read makes a lot of sense- But what suprises me is -
> that I haven't come across anyone really using Reverse key indexes for
> Synthetic (surrogate Primary keys).
>
> Have you ?
>
> vikas
>
>
> -----Original Message-----
> From: Jared Still [mailto:jkstill_at_cybcon.com]
> Sent: Friday, May 11, 2001 11:42 PM
> To: ORACLE-L_at_fatcity.com; Vikas Kawatra
> Subject: Re: Reverse key indexes
>
>
>
> Rather than re-invent the wheel, I'll let Steve Adams explain it.
>
> Besides, his explanation is better than the one I was going to give. :)
>
> http://www.ixora.com.au/tips/design/synthetic_keys.htm
>
> Jared
>
> On Friday 11 May 2001 23:55, Vikas Kawatra wrote:
> > Reverse key indexes are good for columns populated by sequence no's
> > Does that mean that for surrogate Primary key's on OLTP systems - which
>
> are
>
> > populated by sequences - performance could be enhanced by creation
> > reverse key indexes - rather than using the B*Tree unique indexes which
> > are automatically created by Oracle.
> >
> > vikas

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Author: Jared Still
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