Re: Postgresql database

On 05/14/10 12:42, Trinath Somanchi wrote:
> Hi All,
>
> I have Tree structured database to maintain.
>
> Its as follows.
>
> Vehicles

u r talking about a single entity vehicles
it is very common to represent a single entity with a single table

and IF u also have to have an entity "class of vehicles"
u r free to declare the second table named "class"

and IF u also have to represent a reference of manfacturers, another one 
table u have to create then.

that's trivial case