I believe that SQLite triggers only fire for the connection the executed the statement that did the deed, not other connections, which would require SQLite to create threads to make it happen. For Windows, if I remember right, the file system can be asked to send a GUI event on a file change, so the GUI knows to update for the change (if needed). This would be beyond what would be expected of SQLite, but the program could set up a file system notification to the GUI on the database change.