Excuse the long question!
借口的问题!
We have two database tables, e.g. Car and Wheel. They are related in that a wheel belongs to a car and a car has multiple wheels. The wheels, however, can be changed without affecting the "version" of the car. The car's record can be updated (e.g. paint job) without affecting the version of the wheels (i.e. no cascade updating).We have tw
