The network data model has replaced the simpler and more understandable hierarchical one. At its core, the network model is very similar to the hierarchical one, it also has nodes, that is, the root elements into which the most important information is entered. The nodes are interconnected through links. And nodes located at the same distance from the root node form, as in the hierarchical model, levels. The peculiarity of the hierarchical model was that there could be only one route from one element to another, and this is not the case in the network, there are several routes. A network data model provides the ability to build more complex data structures . This is the main difference between these two models.
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