Re: In an RDBMS, what does "Data" mean?
Date: Tue, 15 Jun 2004 01:04:55 +0100
Message-ID: <ia4f9vJn0jzAFwWF_at_thewolery.demon.co.uk>
In message <c0e3f26e.0406100132.6b88c3e5_at_posting.google.com>, Tony
<andrewst_at_onetel.net.uk> writes
>"Anthony W. Youngman" <wol_at_thewolery.demon.co.uk> wrote in message
>news:<0UZ6uTSqd7xAFwl0_at_thewolery.demon.co.uk>...
>> Relational needs an optimiser - Pick gets it for free ... and the stats
>> say that on average it pays off handsomely :-)
>
>Pick doesn't have a "free" optimizer: it just doesn't have one. So
>either there is only one access path, and too bad if it isn't optimal,
>or you the designer/programmer are playing the part of the optimizer
>yourselves (and I don't suppose your time comes free).
So our time isn't free ... but optimisation is inherent in the design. We don't even think about it - it just happens ...
Cheers,
Wol
-- Anthony W. Youngman - wol at thewolery dot demon dot co dot uk HEX wondered how much he should tell the Wizards. He felt it would not be a good idea to burden them with too much input. Hex always thought of his reports as Lies-to-People. The Science of Discworld : (c) Terry Pratchett 1999Received on Tue Jun 15 2004 - 02:04:55 CEST