Jim,

>>This is what I was aiming for. So there are simularities... Of course the relational model is not completely OO, but there are certainly parrallels to draw.
>>
>Walter,
>
>There is a big difference between a parallel adn a similarity and therein lies the danger. As one example, both OO adn RDBMS refer to an "entity". However, the entity in each one is very different from the other. So much different that totally wrong conclusions can be drawn if it is not clear whcih entity one is referring to.

As for everything, just must be familiar with the area, but it would not hurt to find the simularaties between OO and the relational model.

Walter,