ออกแบบ data base ให้เก็ข้อมูลแบบนี้ยังไงหรอครับ ผู้รู้ช่วยทีครับ

<?php  
                                    do { ?> <tr>
                                      <td>&nbsp;</td>
                                      <td width="26%"><?php echo $row_document['category']; ?></td>
                                      <td width="35%">()</td>
                                      <td rowspan="2">กำหนด</td>
                                      <td rowspan="2">แก้ไข</td>
                                      <td rowspan="2">ลบ</td>
                                    </tr>
                                    <tr>
                                      <td>&nbsp;</td>
                                      <td>คำอธิบาย:<?php echo $row_document['explanation']; ?></td>
                                      <td></td>
                                    
                                    </tr>  <?php } while ($row_document = mysql_fetch_assoc($document)); 
									?>

mysql_select_db($database_localhost, $localhost);
$query_document = "SELECT * FROM folder ORDER BY category ASC";
$query_limit_document = sprintf("%s LIMIT %d, %d", $query_document, $startRow_document, $maxRows_document);
$document = mysql_query($query_limit_document, $localhost) or die(mysql_error());
$row_document = mysql_fetch_assoc($document);

if (isset($_GET['totalRows_document'])) {
  $totalRows_document = $_GET['totalRows_document'];
} else {
  $all_document = mysql_query($query_document);
  $totalRows_document = mysql_num_rows($all_document);
}

$totalPages_document = ceil($totalRows_document/$maxRows_document)-1;

mysql_select_db($database_localhost, $localhost);
$query_data = "SELECT files.*,folder.* FROM files,folder WHERE folder.id=files.id_folder and '".$row_document['status']."' ";
//echo $query_data;
$data = mysql_query($query_data, $localhost) or die(mysql_error());
$row_data = mysql_fetch_assoc($data);
$totalRows_data = mysql_num_rows($data);