What are the rudimentary types of information connectivity i.e. model types? I am looking at a modelling tool and are trying to determine all the types of ways that you can model (at a rudimentary level)
I remember seeing a list of ways in which you can connect or categorise information elements. basically the types were as follows:

Lists - constitute a list of information elements

Hierarchies- visualise information in a parent-child relationship (ie organisational chart)

Flows - connect elements in a logical (lateral) flow (ie process model)
Have you seen any reference to these types, or can you elaborate on the full list of &quot;model types&quot;
Model theory, branch of mathematical logic, is based on three things: atoms, functions, and relations. With these you can define pretty much anything. In fact, functions are subsumed by relations, so you only need two.

What is a list but a next relation? What is a hierarchy but a parent-child relation?

Of course these satisfy axioms, and these can readily be expressed in first order logic.