size of XQuery developer community

[Michael Kay]

> I believe, people who are using the newer relational-XML 
> hybrid databases, which have SQL & XQuery hybrid processors, 
> are probably using XQuery a lot (in conjunction with SQL).

Well, it's difficult to tell. In my experience working with clients using
such systems, it can be very difficult to wean the developers off the
familiar SQL side of the product. If you allow developers to continue using
their old tools while also having access to new and unfamiliar tools, they
will often take the path of least resistance. That (together with the sheer
complexity that comes from mixing two query languages with different lexical
rules, different function libraries, and different data types) is one reason
why I think you are much better off using an "XML-only" database system.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay