Returns true if the first argument is greater than the second.
xs:base64Binary
values. Also used in
the definition of the "le" operator.op:base64Binary-greater-than
( $arg1
as xs:base64Binary
,$arg2
as xs:base64Binary
xs:boolean
The function call op:base64Binary-greater-than($A, $B)
is defined to return
the same result as op:base64Binary-less-than($B, $A)