In the _____ model, the basic logical structure is represented as an upside-down tree.

In the hierarchical model, the basic logical structure is represented as an upside-down tree. A hierarchical model is a type of data model, it is a tree-like model in which lower levels/groups are sorted under a hierarchy of higher-level unit (like sorting the staffs of a department in a company under the head of department). The levels are connected to one another through links. A simple pictorial representation of the hierarchical data model is shown in the attachment

MrRoyal MrRoyal · Answer 2 · 2021-12-07T13:24:34+01:00

In the hierarchical model, the basic logical structure is represented as an upside-down tree.

There are several models in database management system.

Some of them are:

Hierarchical model.
Network model.
Entity relationship model.
Relational model.

Each of these models have unique features and characteristics.

Of these four models, the hierarchical model represents its data from top to bottom (as in hierarchy).

Hence, the statement that completes the blank is hierarchical model