| Subject | English | Italian |
| comp., MS | external source system | sistema di origine esterno (A data repository, such as a data warehouse, data mart, or OLTP system, that is outside a specific deployment) |
| transp. | point source system | sistema a sorgente puntiforme |
| comp., MS | source system | sistema di origine (The system in which application and metadata reside before they are migrated to a different one) |