Re: Decline of Science: Computer Science and Databases

On Sat, 9 Nov 2002 00:08:25 +0100, "Carl Rosenberger" <carl_at_db4o.com> wrote:

>class Contract(){
> String name;
> Position[] positions;
> // 30 other members typical to all contracts
>}

>class BuildingEngineeringContract extends Contract(){
> // 30 building engineering specific members
>}

var Contract real relation {Contract Char, //30 other attributes typical to all contracts} key {Contract}

var ContractPositions real relation {Contract Char, Position Char} key {Contract, Position}
foreign key {Contract} references Contract;

var BuildingEngineeringContract real relation {Contract Char, // 30 building engineering specific attributes} key {Contract}
foreign key {Contract} references Contract;

>Houston, I think the problem is on your side.

Your post reflects a deep ignorance about database theory.

Alfredo Received on Sat Nov 09 2002 - 13:57:12 CET