You can now register for attendance of GRADES2014 via the SIGMOD registration form.
If you wish to attend the GRADES2014 workshop only and do not attend other workshops nor SIGMOD/PODS, then under Select registrant type choose the option Workshops only!
This possibility may not be immediately obvious from the web interface.
The deadline for early registration is May 25. If you register after this date, the prices will be higher. See the SIGMOD registration information.