Requested advice/help on modeling a scenario involving multiple conferences, presentations, and people presenters.
There are multiple unique events of a conference under the same umbrella (unique instances of the same conference event class if you will). There is a common superset of presentations, with different subsets selected for each conference. Importantly, the author will not always present the topic at each conference.
The following diagram represents the situation without the needed presenter intersection:
To be honest I'm really struggling on ideas here, hence this post request for help.
Using the guidance of nodes as entities/things, and relationships as verbs, what is the best way to describe this in words? Person 'Alice' presents presentation 'Topic B' at conference 'Cx Earth'?
I found this graphgist (Exploring A Conference), but it doesn't cover my scenarios of multiple events and presenters, I suspect because the node 'Presentation' seems to cover both the event of the presentation slot and the presentation material. I'm looking to keep common the presentation content across events.
Given the word version above, to me this implies an intersection of the three nodes Alice, Topic B, Cx Earth. Is this a common/accepted modeling practice in graphs? Or ... is this really meaning this intersection is the presentation event unique from the presentation content?
Thanks in advance for any advice.