private void detach_Authors(Author entity)
		{
			this.SendPropertyChanging();
			entity.Article = null;
		}
		private void attach_Authors(Author entity)
		{
			this.SendPropertyChanging();
			entity.Article = this;
		}
 partial void UpdateAuthor(Author instance);
 partial void DeleteAuthor(Author instance);
 partial void InsertAuthor(Author instance);