Network data model: Basic structure
The user perceives the network data model as a collection of records in 1:M relationships
Unlike the hierarchical model, the network model allows record to have more than one parent.
In network database terminology, a relationship is called a set.
Each set is composed of at least two record types (owner and member)
Owner = parent, member = child
A record can appear (as a member) in more than one set. (in other