[ALL] let's think about Query Language for 2.0

[Ruslan Zasukhin]

on 5/23/03 1:52 PM, Andreas Grosam at agrosam at computerworks.ch wrote:

> Single Table Query?
> 
> OK, joining tables may require more. But you (Ruslan) must it do
> anyway!!
> This is Relational Algebra, and should be  implemented in a Relational
> DB ;)
> 
> So, why not multi table query??

Correct, and we have join now.

Just step by step.

Level 1: single table + predicate nodes = selection = new relation

Level 2: Relational operations for __relations__:
                join, union, intersection, ...


-- 
Best regards,
Ruslan Zasukhin      [ I feel the need...the need for speed ]
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e-mail: ruslan at paradigmasoft.com
web: http://www.paradigmasoft.com

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