+---+
| 1 |
+---------------+ |
| Proveedor | |
+---------------+ |
| |
+---+
|
V
+----------+
| Compra |
| Orden |
+----------+
|
V
+----------------------+
| Sistema de gestión de inventario |
+----------------------+
|
V
+------------------+
| Catálogo de productos |
+------------------+
|
V
+----------------------+
| Subsistema de control de inventarios |
+----------------------+
```