treat database error handling

Details

Id:	d5f73321b32d7427f7bf6c90aa47c330d0bc456f
Type:	task
Creation time:	2009-02-19 11:45 UTC
Creator:	mootoh <mootoh@...>
Release:	unassigned
Component:	milpon
Status:	paused

Issue log

2009-05-15 11:48 UTC	mootoh <mootoh@...>	changed status from in_progress to paused
2009-03-11 04:54 UTC	mootoh <mootoh@...>	commented
use Exception to handle errors. still need to catch them.
2009-03-11 04:45 UTC	mootoh <mootoh@...>	changed status from unstarted to in_progress
2009-02-19 11:45 UTC	mootoh <mootoh@...>	created