academic textbooks have them. The silbershatz book 'database systems concepts' has it in chapter 12.
>
> From: "Prem Khanna J" <jprem_at_kssnet.co.jp>
> Date: 2004/02/05 Thu PM 11:57:29 EST
> To: <oracle-l_at_freelists.org>
> CC: <cary.millsap_at_hotsos.com>
> Subject: RE: How does Oracle keep B-tree indexes to 3 levels?
>
> Hi Cary & List ,
>
> i have been long trying to get a pictorial representation
> of a simple b-tree index and how it changes as the
> index grows . Though i read the docs , still i'm not
> able to say "okay , this is how b-tree index works" .
>
> Has anyone got something like what i'm looking for ?
>
> Just curious to know :
> Cary , what does * Nullius in verba * mean ?
>
> Regards,
> Prem.
>
> >>-----Original Message-----
> >>From: oracle-l-bounce_at_freelists.org
> >>
> >>You get a new level only if the parent node splits propagate
> >>all the way
> >>to the index root node. Jonathan Lewis and Steve Adams have some good
> >>tests in their courses that use block dumps to show how Oracle
> >>redistributes keys in branch blocks when nodes split.
> >>
> >>Yes, Oracle index nodes are one block apiece.
>
> >>Cary Millsap
> >>* Nullius in verba *
>
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Received on Fri Feb 06 2004 - 06:36:42 CST
