Understanding Databases and Data Warehouses
This chapter covers portions of Objective 1.1 (Identify basic concepts of data schemas and dimensions) of the CompTIA Data+ exam and includes the following topics:
Databases and database management systems
Relational databases vs. non-relational databases
For more information on the official CompTIA Data+ exam topics, see the Introduction.
This chapter covers topics related to databases, data warehouses, and data lakes, as well as key topics related to relational and non-relational databases. Databases and database systems are an indispensable component of our life that impact both trivial and very complex transactions online and offline. Data warehouses and data lakes enable modern systems to leverage information—which may be structured or unstructured—for analytics. Understanding the types of databases, data warehouses, and data lakes helps you understand the role they play as well as the key aspects of their existence in organizational constructs.