Re: foundations of relational theory? - some references for the truly starving
From: Anthony W. Youngman <thewolery_at_nospam.demon.co.uk>
Date: Thu, 30 Oct 2003 00:30:49 +0000
Message-ID: <CXzD8EH5uFo$EwUH_at_thewolery.demon.co.uk>
Date: Thu, 30 Oct 2003 00:30:49 +0000
Message-ID: <CXzD8EH5uFo$EwUH_at_thewolery.demon.co.uk>
In article <bnibhg$11vvi4$1_at_ID-152540.news.uni-berlin.de>, Costin
Cozianu <c_cozianu_at_hotmail.com> writes
>> Oh - and you want the stats? On average, to retrieve any one row, chosen
>> at random, you need to read just *1.05* frames either to retrieve the
>> row from its primary key, or to know that that primary key doesn't
>> exist! The size of the file doesn't enter into the equation.
>>
>> Cheers,
>> Wol
>
>
>Anthony,
>
>You've got no clue about how modern DBMSes work. None (not even your Pick
>probably) reads 1.05 frames, 1.05 means 2.
-- Anthony W. Youngman - wol at thewolery dot demon dot co dot uk Witches are curious by definition and inquisitive by nature. She moved in. "Let me through. I'm a nosey person.", she said, employing both elbows. Maskerade : (c) 1995 Terry PratchettReceived on Thu Oct 30 2003 - 01:30:49 CET
