What is the name of the method for dividing data into tables using identifiers in a database?

The method of dividing data into tables using identifiers in a database is called normalization. Specifically, when data is split into several related tables, and the relationship between them is established through foreign keys (identifiers), this helps to avoid redundancy and ensure data integrity.

Example: there is a Users table with fields id, name, and an Orders table with fields id, user_id, order_date. Here, user_id is a foreign key linking the order to the user.