[Data-modeling] graph, nodes, relationships - a few questions

[John Giannandrea]

Roland Bouman wrote:
> One the one hand, nodes hold no information themselves, rather the
> relationships between nodes hold the interesting information, yet at
> the same time, relationships are themselves actually nodes.

The confusion stems from what we call primitives, from which nodes and  
links are made.
You can read more about this here:  http://blog.freebase.com/2008/04/09/a-brief-tour-of-graphd/

Basically we have a database of primitives, from which we make a  
directed graph (nodes and links) and then MQL tries hard to hide the  
graph and expose objects with properties.  All the properties are  
links and all the objects are nodes.  But everything is a primitive.

-jg