In what situations is it advisable to apply denormalization in a database structure?

Denormalization in a database is used when read speed is important and reducing the number of complex JOIN queries is desired. This is justified in the following situations:

• In systems with high read load, where performance is crucial.
• When data is rarely updated, and redundancy does not lead to frequent errors.
• To simplify and accelerate analytical queries.
• In real-time systems where delays are critical.

For example, in an online store, copies of user information can be stored in the orders table to quickly retrieve data without additional joins.