Re: Advice on SQL and records

"David Cressey" <david.cressey_at_earthlink.net> wrote:

> > What does "cardinality" mean? What's an "optimizer"?
 

> The cardinality of that table is the number of rows in the table.

Surely you mean records, or tuples? Rows are for spreadsheets.  

> The order of a table is the number of columns in it.
> "order" is a poor choice of terminology, since many people will read it as
> "Sort order".

That's maths for you - not always intuitive.

Paul...

-- 

plinehan __at__ yahoo __dot__ __com__

XP Pro, SP 2, 

Oracle, 9.2.0.1.0 (Enterprise Ed.)
Interbase 6.0.1.0;

When asking database related questions, please give other posters 
some clues, like operating system, version of db being used and DDL.
The exact text and/or number of error messages is useful (!= "it didn't work!").
Thanks.
 
Furthermore, as a courtesy to those who spend 
time analysing and attempting to help, please 
do not top post.