"Paulie" <paul_at_not.a.chance.ie> wrote in message
news:3dcd0847.11417297_at_news1.eircom.net...
>
> Jayne Heger <hegerthehorrible_at_hotmail.com> wrote:
>
>
> > Ok, I am working on a database model using the top down Exteded Entity
> > Diagram approach and then mapping directly into relations. The data
model
> > will comprise of superclass and 4 subtypes. plus other entity typesm
maybe
> > a weak entity, and obviously it will be fully relational, primary keys
and
> > foreign keys. After which I will run some SQL queries to test that its
> > working and print these off.
>
>
> You may want to look at Postgres - it has datatypes which can inherit
> from each other - the only one that I know of!
> Paul...
Isn't that an excellent reason to avoid Postgres? Or at least its unique
functionality?
Received on Sun Nov 10 2002 - 02:03:19 CST
