At 08:31 AM 21-07-00 +0800, you wrote:

> > create table <table-1> [EXTENDS <table-2>]...
> >
> >No DML extensions are required. Examples:
> >
> > create table event
> > (when timestamp, id integer, description clob);
> > create table hardware_event extends event
> > (hardware varchar, serial varchar);
> > create table software_event extends event
> > (software varchar, version varchar, host varchar);
> > create table database_error extends software_event
> > (filename varchar);
>
>Dear Jim,
>
>I remember that CJ (?) Date's book had a chapter on object-oriented SQL.
>I'll try to dig it up in my boxes and post the syntax (and implementation)
>here.
>
>With regards to Date and Hannibal, my father was definitely more like Date -
>nurturing in a boring kind of way.

Hehe, my Dad taught us all to drive when we turned 14. In my first lesson,
which got me to the end of the driveway in reverse gear, we spent the first
two hours sitting side by side IN the driveway whilst I received my first
HOW-TO on driving. The next time I turned the key, I knew everything I
know today about the theory of gears and differentials.

In my family, there are differing opinions about whether Dad is more like
Date or Hannibal.

Helen
http://www.interbase2000.org
___________________________________________________
"Ask not what your free, open-source database can do for you,
but what you can do for your free, open-source database."
(J.F.K.)