Give me brief explanation about Udcx file and when do we use this in infopath forms.
Here’s the best explanation I’ve ever found for when/why to use a UDCX file connection:
http://blogs.msdn.com/b/infopath/archive/2006/10/02/data-connections-in-browser-forms.aspx
My experience is you convert your data connections to a Connection File library (UDCX file) to ensure they work across domains/browsers. Â Fewer errors = happier users.
Hope this helps,
Robin