class Table extends Relation implements Iterable<Row> {

  public Table last(int nRows) {
    int newRowCount = Math.min(nRows, rowCount());
    return inRange(rowCount() - newRowCount, rowCount());
  }

  private  Table();
  private  Table(String name);
  protected  Table(String name, Column<?>... columns);
  protected  Table(String name, Collection<Column<?>> columns);

}