This xQuery will grab PIDs and access rights metadata records from Digitool digital entities imported into BaseX. Namespaces were NOT stripped, so the name space declaration in line two is necessary.

gistfile1.xquery

xquery version "3.0";
declare namespace xb="http://com/exlibris/digitool/repository/api/xmlbeans";

<data>
{
for $Record in /xb:digital_entity_call
let $PID := $Record/xb:digital_entity/pid
let $arrecord := $Record/xb:digital_entity/mds/md[type[contains (., 'rights_md')]]

return

<record><pid>{data($PID)}</pid> {$arrecord}</record>


}
</data>