Re: About referential integrity.

> Anyway, couldn't it be an extention to postgreSQL ? If you have 
> heard about 
> Business Objects, you should know that it can do it very well 
> provided you 
> draw the relationchips between the tables of your database. And 
> it's of much 
> use, since you just have to concentrate on the fields you want to 
> fetch and 
> the program takes care of the relations and handles group by, 
> order by and 
> where clause.

Nope - that's the job of the client program (ie. Business Objects)

> As of PostgreSQL, I don't think it would be a hard thing to put 
> on, since the 
> relations are stored in a system table, including the fields the 
> tables are 
> linked by. A sort of syntax :
> 
> select *
> from AUTO JOIN t1, t2;

How is this different from:

select *
from t1 NATURAL JOIN t2;

???

Chris