Question

Which of the following is a disadvantage of the hierarchical data model? Group of answer choices It is not efficient with 1:M relationships. It does not have standards. It does not promote data integrity. It does not promote data sharing.

Answer 1

The hierarchical data model does not promote data sharing.

Step-by-step explanation:

A disadvantage of the hierarchical data model is that it does not promote data sharing. In this model, data is organized in a tree-like structure where each parent can have multiple child records, but each child can only have one parent. This makes it difficult to share data between different branches or hierarchies.

For example, if you have a hierarchical data model representing an organization's departments and employees, it would be challenging to share data between different departments. If you want to access information from a different department, you would have to traverse through multiple levels of the hierarchy to get to the desired data.

Other data models like the relational model or the network model provide better support for data sharing by allowing more flexible relationships between entities.

Answer 2

It is not efficient with relationships

Step-by-step explanation:

Developed in the 1960s, it was the pioneer mainFrame database system which uses an upside-down for structuring data. At the top of the tree is parent while the branches are the children. It is however not efficient with relationships as each child can only have one parent.