XQL is a query language created in 1998 by Hiroshi Ishikawa and Kazumi Kubota and Yasuhiko Kanemasa.
| #3539on PLDB | 26Years Old |
select result:<$book.title, $book.author>
from bib:URL "www.a.b.c/bib.xml", book:$bib.book
where $book.publisher.name ="Addison-Wesley"
groupby $book.title