| Subject | English | Polish |
| comp., MS | back-end application | aplikacja wewnętrzna (In a client/server application, the part of the program that runs on the server) |
| comp., MS | front-end/back-end application | aplikacja zewnętrzna/wewnętrzna (" An application consisting of a "back-end" database file that contains tables, and copies of a "front-end" database file that contain all other database objects with links to the back-end tables.") |