At 03:34 PM 21/10/2003 +0000, you wrote:

>I am a amateur SQL programmer
>
>I following this thread and I hardly understand things you talk about
>... and my problem is all about index... how to learn to optimize...
>about query plan ...
>
>I dont have any problem with triggers ... hi Helen you have mention
>some about how to design carefully the database I think that is
>importment to do you have any suggestion what good book to read about
>designing database that is easily understand

Yep. You won't regret buying "Data Modeling Essentials, 2nd Edition" by
Graeme C. Simsion, publ. Corolis last year. Coriolis collapsed at the
beginning of this year and Mr Simsion is now distributing the book
himself. Ask me privately for his email address.

heLen