XML has emerged as the industry standard for representing and
exchanging data and is already predominant in todays applications.
Business, analytic and structured data will be exchanged as XML
between applications and web services.  XQuery is the query language
recommended by W3C, which is designed to be applicable across many
types of data sources. In this talk, I will provide my perspectives
on XQuery language. In particular, I will discuss the limitations of the
current XQuery capabilities and highlight some features which are still
missing,
such as the ability to succinctly express
and efficiently execute even very simple analytic queries.