upward compatible的意思|示意

You can define a new XML schema that is upward compatible with the existing XML schema.

可以定义一个新的XML schema，与现有XML schema向上兼容。

This scenario evolves the XML schema that is upward compatible with the existing XML schema.

这个场景更新XML schema，新的schema与现有XML schema向上兼容。

The XML schema is evolved, which is upward compatible with the existing XML schema.

XML schema被更新，但与现有XML schema向上兼容。