Is it possible to throw exceptions inside a trigger? What will happen to the database and the RS Bank interface?

Yes, exceptions can be raised inside a trigger (for example, in PL/SQL or T-SQL). If an exception occurs, the transaction within which the trigger was fired is usually rolled back, and changes in the database are not saved.

For the RS Bank interface, this means that the operation that triggered the exception will end with an error, and the user will see an error message. This helps prevent incorrect data modifications but requires error handling at the application level to inform the user properly.