Tweaked sqlite3 documentation

docs/patterns/sqlite3.rst

@@ -26,12 +26,11 @@ Here is a simple example of how you can use SQLite 3 with Flask::
         if db is not None:
             db.close()
 
-All the application needs to do in order to now use the database is have
+Now, to use the database, the application must either have an active
-an active application context (which is always true if there is a request
+application context (which is always true if there is a request in flight)
-in flight) or to create an application context itself.  At that point the
+or create an application context itself.  At that point the ``get_db``
-``get_db`` function can be used to get the current database connection.
+function can be used to get the current database connection.  Whenever the
-Whenever the context is destroyed the database connection will be
+context is destroyed the database connection will be terminated.
-terminated.
 
 Note: if you use Flask 0.9 or older you need to use
 ``flask._app_ctx_stack.top`` instead of ``g`` as the :data:`flask.g`