Question

Is it possible to have more than one set of parent nodes?

example:

<?xml version="1.0" encoding="UTF-8" ?>
<parentOne>
    <child>
          <subChild></subChild>
     </child>
</parentOne>
<parentTwo>
    <child>
          <subChild></subChild>
     </child>
</parentTwo>

is there a way for that work?

Answer 1

Short answer: No.

Every XML document has exactly one root element as per standard.

[Definition: There is exactly one element, called the root, or document element, no part of which appears in the content of any other element.] For all other elements, if the start-tag is in the content of another element, the end-tag is in the content of the same element. More simply stated, the elements, delimited by start- and end-tags, nest properly within each other.

Use something like this instead:

<?xml version="1.0" encoding="UTF-8" ?>
<parents>
    <parent id="One">
        <child>
              <subChild></subChild>
         </child>
    </parent>
    <parent id="Two">
        <child>
              <subChild></subChild>
         </child>
    </parent>
</parents>