RES: Another question about composite types

  I know that if I create a table salary that references my employee table
works! But I'm trying to work with the composite type concept!
 Thinking in Object-Oriented Programming (OOP) I have a class employee that
is composed by the class salary among other things! Like:

Class salary { private float value; private date validity;
}

Class employee { private int ID; private String name; private salary[] sal;
}

So I'd like to map these classes to PostgreSQL. I think nested tables are
one of the advantages of object-relational databases. And it works if I
think in just one salary for each employee. But I want to keep all salary
history for each employee. Is there any way?

-----Mensagem original-----
De: Richard Broersma Jr [mailto:rabroersma@yahoo.com] 
Enviada em: segunda-feira, 13 de novembro de 2006 14:46
Para: rodrigo.sakai@zanthus.com.br; pgsql-sql@postgresql.org
Assunto: Re: [SQL] Another question about composite types

>   CREATE TYPE t_salary AS (Value numeric(10,2), Validity date);
>   CREATE TABLE employee (id int, name varchar(30), salary t_salary[]);
>
> That is, I need an array of composite type and searching on google I found
> that is impossible to do it! Is it really impossible? Anyone have do it ?

Why not use a conventional table to hold this information that references
your employee table?

Regards,

Richard Broersma Jr.