Classes that participate in a classification hierarchy can be represented within a relational database as a set of tables with the primary key of the general class table replicated in the other tables.

Question

Classes that participate in a classification hierarchy can be represented within a relational database as a set of tables with the primary key of the general class table replicated in the other tables.​

Quizplus · Accepted Answer

This statement is true. The general class table would have a primary key, and the other tables representing specific sub-classes would have a foreign key that references the primary key of the general class table. This replication of the primary key allows for easy querying and organizing of data within the hierarchy.

Classes That Participate in a Classification Hierarchy Can Be Represented