Re: E/R modeling: relationship's attributes

I think you should make some difference between ERM and RMD. ERM is infological model - it tryes to describe some enterprise, its entitites, relationships ets, what exist in real world (or rather what some persons think about this enterprice, becouse other person can imagine it in other way). RMD is datalogical model - it offers formal, and IMHO universal way how data must be organised. So it means, that relations can contain any data - it doesn't matter is this data on entities (ERM's term), on relationships (ERM's term too) or anything else if we will use other infological model. Use names! :). If the relation has the name "SomeEntityName" it is very possible that it really contains data on the entity (But I'm not sure:). If it names as "SomeRelationshipName" I will wait that it contains data on the relationship, which can have some attributes of course. Received on Thu May 04 2006 - 15:33:54 CEST