A hierarchical database is a data model in which data is stored in the form of records and organized into a tree-like structure, or parent-child structure, in which one parent node can have many child nodes connected through links.

Is hierarchical relational database?

A fundamental difference between segments in a hierarchical database and tables in a relational database is that, in a hierarchical database, segments are implicitly joined with each other. ... In a relational database, this relationship between tables is captured by foreign keys and primary keys.

What do you mean by hierarchical data?

Hierarchical data is a data structure when items are linked to each other in parent-child relationships in an overall tree structure. Think of data like a family tree, with grandparents, parents, children, and grandchildren forming a hierarchy of connected data.