if it is in 2NF and has no transitive dependencies. This means non-key attributes shouldn't depend on other non-key attributes. Catedra de Base de Datos
Consideremos la siguiente tabla inicial no normalizada que registra las compras de clientes en una tienda: Tabla: Ordenes_Original id_cliente nom_cliente 2026-04-10 Juan Pérez Teclado, Ratón 2026-04-11 Ana Gómez Paso 1: Primera Forma Normal (1NF) if it is in 2NF and has no transitive dependencies
This was the climax. The PDF warned of "Transitive Dependencies"—the hidden ghosts in the machine. A city shouldn't depend on an Order ID; it depends on the Zip Code. Like a surgeon, Mateo followed the PDF's lead, extracting the "Geography" table away from the "Customers." Mateo followed the PDF's lead
| ID Cliente | Nombre | Dirección | ID Pedido | Fecha Pedido | Total Pedido | | --- | --- | --- | --- | --- | --- | | 1 | Juan Pérez | Calle 123 | 1 | 2022-01-01 | 100 | | 1 | Juan Pérez | Calle 123 | 2 | 2022-01-15 | 200 | | 2 | María Gómez | Calle 456 | 3 | 2022-02-01 | 50 | if it is in 2NF and has no transitive dependencies