partial void DeleteBOOK(BOOK instance);
partial void UpdateBOOK(BOOK instance);
private void detach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.Publisher = null;
}
partial void InsertBOOK(BOOK instance);
private void attach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.Publisher = this;
}