[Sigia-l] CMS and IA

[Nuno Lopes]

Hi Peter, thanks in for your reply,

Peter wrote:

>You are talking about two different things. RDBMS and OODMS are ways of
>modelling stuff. Faceted classification systems and ontologies are
>models. They can be expressed in an RDBMS or an Object Model. Apples
and
>oranges.

Not really. RDBMS is a data storage system and an inference engine
(query engine) built around a modeling paradigm named
Entity-Relationship (or something like that). In this paradigm there is
no notion of inheritance, although inheritance can be built around it.