Today Almost Every Commercial Database Is Based on ________

question 61

Multiple Choice

Today almost every commercial database is based on ________.

• A) lists
• B) the hierarchical model
• C) the linked-list model
• D) the relational model
• E) the object-oriented model

---

Definitions:

Population Age Structure

The distribution of individuals in a population according to their ages, which influences growth rates and demographic trends.

Prereproductive

Referring to organisms or life stages that have not yet reached the age or stage where they can reproduce.

Demographic Transition Model

A theoretical model that describes the stages a country goes through as it transitions from a non-industrial to an industrial economic system, influencing birth and death rates and overall population growth.