class Table extends Relation implements Iterable<Row> {

  public Table replaceColumn(final int colIndex, final Column<?> newColumn) {
    removeColumns(column(colIndex));
    return insertColumn(colIndex, newColumn);
  }

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

}