If you aren't already familiar with the various web-based DB to tools, that wouldn't be a bad place to start. The basic admin interfaces from Rails or Django a

If you aren't already familiar with the various web-based DB to tools, that wouldn't be a bad place to start. The basic admin interfaces from Rails or Django are probably simpler than what you are looking for, but you might get some ideas. You've probably used it before, but exploring phpMyAdmin might be helpful to get ideas for features and improvements.