partial void DeleteCASING(CASING instance);
 partial void UpdateCASING(CASING instance);
		private void detach_CASINGs(CASING entity)
		{
			this.SendPropertyChanging();
			entity.BOREHOLE = null;
		}
 partial void InsertCASING(CASING instance);
		private void attach_CASINGs(CASING entity)
		{
			this.SendPropertyChanging();
			entity.BOREHOLE = this;
		}