Re: index clarification
Date: Thu, 30 Aug 2012 10:44:40 -0400
Message-ID: <CAPptggVh9tAgRyrX0n9QFZMEwiARhBZk-FVh7D1U6mBMrONbqg_at_mail.gmail.com>
Jeremy,
Did someone say ... Block Dumps?
"Note this is a *Non-Unique *index and so the index entries have a specific format that enables each index entry to still be defined in a unique manner. This is effectively achieved by including the rowid as an additional column within each index entry."
(part II from this series)
https://richardfoote.wordpress.com/2010/02/08/index-block-dumps-and-treedumps-part-i-knock-on-wood/
Paul
putting out fire with gasoline.
On Thu, Aug 30, 2012 at 10:36 AM, Sheehan, Jeremy < JEREMY.SHEEHAN_at_nexteraenergy.com> wrote:
> This may seem like a newbie question, but my technical lead told me
> something yesterday that was contrary my thinking and assumptions on how
> indexes work.
>
> I was always under the assumption (from studies and readings) that an
> index contains the values for the indexed columns and a rowid that points
> back to the table. My technical lead says that indexes do not have a
> rowid. Is he right? If it doesn't contain the rowid, how does it relate
> back to the table?
>
> Thanks in advance...
>
> Jeremy
>
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>
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