title: Sqlite update hook with external database
body: <p>Basically i'm developing an application in python where it listens to external sqlite database changes, so far i implemented update_hook()(from this example: <a href="https://stackoverflow.com/questions/16872700/sqlite-data-change-notification-callbacks-in-python-or-bash-or-cli/16920926#16920926">SQLite Data Change Notification Callbacks in Python or Bash or CLI</a>) it worked well when i launch SQL statements in the same process however when i use external database that has now relation with my process it doesn't work.
  My question is how do i listen to database changes from an external process(A) that has no relation with process(B).</p>