Is there any sample code for relational databases?

<!-- Parametric Search -->

<h3>Suspension Quick Lookup</h3>
<table style="width:50%"><tbody>
  <tr>
    <td>Manufacturer:</td>
    <td style="width:66%;">{joodb groupselect|suspension_manufacturer|1|true}</td></tr>
  <tr>
    <td>Type:</td>
    <td>{joodb groupselect|suspension_type|1|true}</td></tr>
  <tr>
    <td style="border-bottom: 1pt solid #000;">Model:</td>
    <td style="border-bottom: 1pt solid #000;">{joodb groupselect|suspension_model|1|true}</td>
  </tr>

<!-- Use PHP to reveal output only when result = 1 -->
<!-- Set Menu-Item|Details|Options|'Documents per page' to 1 -->

<?php

$result=substr("{joodb resultcount}", -4);

if ($result=="of 1") { $show=""; } else { $show="style=display:none"; }

?>

<!-- Begin Loop -->
{joodb loop}

  <tr>
    <td>Description:</td>
    <td><div <?php echo $show; ?> >{joodb field|suspension_manufacturer} | {joodb field|suspension_type} | {joodb field|suspension_model}</div></td>
  </tr>
  <tr>
    <td>OEM Air Spring Number:</td>
    <td><div <?php echo $show; ?> >{joodb field|manu_primary_air_spring_no}</div></td>
  </tr>
  <tr>
    <td>Firestone Air Spring Number:</td>
    <td><div <?php echo $show; ?> >{joodb field|air_spring_fire_stone_no}</div></td>
  </tr>
  <tr>
    <td style="border-bottom: 1pt solid #000;">Goodyear Air Spring Number:</td>
    <td style="border-bottom: 1pt solid #000;"><div <?php echo $show; ?> >{joodb field|air_spring_good_year_no}</div></td>
  </tr>

<!-- Insert more output fields here -->
<!-- Bottom border treatment should appear in final output row --> 

<!-- End Loop -->
{joodb loop}

</tbody></table>

<!-- Might consider putting a search button here as well -->
{joodb resetbutton}

<!-- This is necessary for updated dropdown selections -->
<script type="text/javascript" >
jQuery('#searchForm select.groupselect').change(function(){ submitSearch(""); });
</script>