These routines are used to begin and end working sessions with DB-ALLe.
| Name | Description | See |
| idba_presentati(dbh,dsn,user,pwd) | Connect to the database | 3.2 |
| idba_preparati(dbh,h,mana,mdata,mattr) | Open a new session | 3.2 |
| idba_fatto(h) | Close a session | 3.7 |
| idba_arrivederci(dbh) | Disconnect from the database | 3.7 |