BNF for XML Schema?

I've looked in vain for BNF definitions, or some equivalently precise,
specification.

This might be an old-fashioned request, but I need a precise syntax
specification in a language that I confidently understand!

Regards, Henry

Henry Gladney, Ph.D       (408)867-5454
HMG Consulting  
20044 Glen Brae Drive, Saratoga CA 95070
http://home.pacbell.net/hgladney/