Inside <certification> data about the certification of a diver is given. Several <certification> elements can occur one after the other. At least one <certification> element must occur inside the <education> section.
<instructor>, <issuedate>, <level>, <organization>, <specialty>, <validdate>
<certification>
<level>Bronze</level>
<organization>VDST</organization>
<instructor>
<firstname>Ingo</firstname>
<middlename>Jürgen</middlename>
<lastname>Knattermann</lastname>
<sex>m</sex>
<birthdate>
<!-- date of birthdate not known -> statements omitted -->
</birthdate>
<address>
<!-- address not known -> statements omitted -->
</address>
<contact>
<language>German</language>
<!-- phone number unknown -> <phone> element omitted -->
<email>ijk@knattermanns_tauchschule.de</email>
<homepage>http://www.knattermanns_tauchschule.de</homepage>
</contact>
</instructor>
<issuedate>
<date>
<year>2005</year>
<month>6</month>
<day>26</day>
<dayofweek>7</dayofweek> <!-- Sonntag -->
</date>
</issuedate>
<></>
</certification>
<certification>
<specialty>Strömungstauchen</specialty>
<organization>VDST</organization>
<instructor>
<firstname>Ingo</firstname>
<middlename>Jürgen</middlename>
<lastname>Knattermann</lastname>
<sex>m</sex>
<birthdate>
<!-- date of birthdate not known -> statements omitted -->
</birthdate>
<address>
<!-- address not known -> statements omitted -->
</address>
<contact>
<language>German</language>
<!-- phone number unknown -> <phone> element omitted -->
<email>ijk@knattermanns_tauchschule.de</email>
<homepage>http://www.knattermanns_tauchschule.de</homepage>
</contact>
</instructor>
<issuedate>
<date>
<year>2005</year>
<month>8</month>
<day>27</day>
<dayofweek>6</dayofweek> <!-- Samstag -->
</date>
</issuedate>
</certification>