What really makes defining the xml model spiffy is that you can actually bind a datatype using either built - in w3c xml schema datatypes or xforms own to any element in the model . this has several advantages Xml模型出色的地方在于，您可以（通过内置的w3c xml schema数据类型或者xforms自己的类型）真正将某一种数据类型绑定到模型中的任意元素上。
