<td align="center">[[File:ArrowGreenDown.png|40 px]]</td>
<td align="center">[[File:ArrowGreenDown.png|40 px]]</td>
</tr>
<tr>
<td>each pump refers exactely to the one plant</td>
<td>two pumps are controlled by 2 armatures<br>one pump is controlled by one armature</td>
</tr>
<tr>
<td align="center">[[File:ArrowGreenDown.png|40 px]]</td>
<td align="center">[[File:ArrowGreenDown.png|40 px]]</td>
</tr>
<tr>
<td align="center"><b>Cardinality 1 : n</b></td>
<td align="center"><b>Cardinality n : n</b></td>
</tr>
</table>