Re: Relation in tables

You may possibly solve the problem with the inheritted tables with the
RULE-System of pgsql. But this seems oversized to me. 
You could rather create several tables, each with its matching
rights/privileges and 'connect' them via an 1:1 relation.
The 'real' way such thing is normally done is to write stored procedures
which are accessible (Executable) only by those departments that may. If you
give these procs SECURITY DEFINER, you can restrict access to the actual
tables to only the procedure's owner

> -----Original Message-----
> From: lucas@presserv.org [mailto:lucas@presserv.org]
> Sent: Mittwoch, 16. Februar 2005 17:43
> To: pgsql-sql@postgresql.org
> Subject: [SQL] Relation in tables
> 
> 
> Hello all...
> I am starting in Postgresql...
> And I have a question:
> I am developing a DB system to manage products, but the 
> products may be
> separated by departaments (with its respectives coluns)... Like:
> 
> CREATE TABLE products(
>    id   serial  primary key,
>    desc valchar(100),
>    ...
> );
> 
> Okay, but the products is typed by "amount departament" and 
> this departament
> should not have access to other coluns like "values, Money, etc...".
> The "finances departament" may modify the data into products 
> table, but this
> departament should not have access to coluns like "amounts, etc...".
> 
> I' ve tried to create the products table with INHERITS but 
> its not right...
> look:
> 
> CREATE TABLE prod_amounts (
>    amount_min   numeric,
>    amount_cur   numeric,
>    amount_max   numeric,
>    ...
> ) INHERITS products;
> 
> CREATE TABLE prod_values (
>    buy_value   money,
>    sen_value   money,
>    ...
> ) INHERITS products;
> 
> Okay, but the problem is: I can INSERT a prod_amounts normaly 
> and automaticaly
> the products table will be filled, but when i try to modify 
> the data in
> prod_amounts (references in products) there is no data....
> I think its not right ( I am sure :/ ).
> How Can I do it???
> How Can I References Between Prod_amounts and Prod_Values 
> automaticaly?
> remembering the Amounts departament may not access the Values 
> departament data
> and the Values departament may not access the amounts data... 
> And the products
> will be registred (typed) in Amount departament....
> 
> Thanks for all.
> 
> ---------------------------(end of 
> broadcast)---------------------------
> TIP 9: the planner will ignore your desire to choose an index 
> scan if your
>       joining column's datatypes do not match
>