What is a relational database used for?

A relational database is designed to manage data in a structured way, allowing users to create relationships between different sets of data stored in various tables. This capability supports linking data from two or more tables, which is essential for creating comprehensive reports and queries that reflect the complex interrelations and dependencies between data points. Such a modification ensures that users can retrieve and manipulate relevant data efficiently.

This linking feature is pivotal for tasks such as data reporting, data analysis, and maintaining data integrity, enabling users to conduct more sophisticated data operations. In contrast, the other options do not accurately describe the primary functions of a relational database: a standalone database lacks the relational capabilities critical for linking data, software to manage customer feedback might utilize a database but doesn’t define the relational database's overarching purpose, and a system for storing files only does not encompass the relational aspect of data organization and retrieval.