How does using auxiliary tables facilitate extracting the needed data from the database?

Auxiliary tables (often called reference or linking tables) help structure data and optimize database queries. They allow:

• To divide data into logical parts, reducing redundancy and increasing integrity.
• To use many-to-many relationships through intermediate tables, simplifying the retrieval of related data.
• To improve query performance by indexing auxiliary tables and reducing the volume of data in main tables.

For example, if there are tables Users and Roles, then the auxiliary table UserRoles will allow quickly obtaining user roles without data duplication.