What Is Hierarchical Model?and What Are Its Advantages And Disadvantages?

One advantage of this type of database is that data can be retrieved  very quickly.  Another is that referential integrity is built in and enforced.

Advantages of a hierarchical model is that all the staff know their roles within the departments

a disadvantages is that when passing on messages it can get complicated and some staff may misunderstand the message and cause problems.

Disadvantage
communication between groups