1<schema xmlns="http://www.ascc.net/xml/schematron" >
2     <pattern name="Test count">
3          <rule context="/*">
4               <report test="count(//BBB) = count(//AAA)">O.K.</report>
5               <assert test="count(//BBB) &lt;= count(//AAA)">Some AAA are missing</assert>
6               <report test="count(//BBB) &lt; count(//AAA)">Some BBB are missing</report>
7          </rule>
8     </pattern>
9</schema>
10
11