Attribute Constructors

• List books published by Addison-Wesley after 1993, including their year and title:

  <bib>
   {
     for $b in document("bib.xml")/bib/book
     where $b/publisher = "Addison-Wesley" and $b/@year > 1993
     return
      <book year ="{ $b/@year }">
       { $b/title }
      </book>
   }
  </bib>
  

Adapted from XML Query Use Cases