I just ran across this article on the IBM magazine website.
http://www.ibmsystemsmag.com/ibmi/enews ... 530p1.aspx
It includes a quick example application and an associated screencast that gives a some good getting-started tips for Xataface.
One interesting thing that I learned from this article is that Xataface can be used with a DB2 database via the MySQL DB2 storage engine.
