A network structure is more a star topology whereas a Hierarchical structure is like a tress... Allowing you to drill down to get to an answer.
Hierarchical Networks
The hierarchical data model organizes data in a tree-like structure with a single parent for each child record. On the other hand, the network data model allows for multiple parent-child relationships, creating a more flexible and complex network of interconnected records. In the hierarchical model, relationships are one-to-many, while in the network model, relationships can be many-to-many.
The use of network prefixes in IP addressing enables it to be hierarchical. By subdividing the address space into network and host portions, IP addresses can be aggregated into larger blocks that simplify routing and management of networks. This hierarchical structure allows for efficient routing of data packets across a network.
An introduction to the concepts involved can be found in this place: http://www.unixspace.com/context/databases.html
hierarchical structure
There are more people in the hierarchical structure then the matrix structure. The matrix structure is more complex than the hierarchical structure
Hierarchical structure
a structure of a business
hierarchical structure
Network Address
hierarchical structure of Directories
A hierarchical structure is one in which there are well-defined levels of authority, with each person subordinate to superiors and/or in charge of underlings.