you can define a new xml schema that is upward compatible with the existing xml schema.
可以定义一个新的xmlschema,与现有xmlschema向上兼容。
is upward compatible with the xml schema cust1.xsd so that cust1.xsd can be replaced with cust2.xsd.
xml schemacust2.xsd与xmlschemacust1.xsd向上兼容,因此cust1.xsd可以被cust2.xsd替换。
if the xml schema is evolved as upward compatible with the existing xml schema, the existing xml data can be managed with the new xml schema without any modifications.
when xml data is evolved which is upward compatible with the existing xml schema, you can manage the existing xml data with the new xml schema without any modification.
this scenario evolves the xml schema that is upward compatible with the existing xml schema.
这个场景更新xmlschema,新的schema与现有xmlschema向上兼容。
it also discusses the membership rules of the tool families, good construct of the tool configuration, upward compatible relations between the tool, and the scope affected by the tools' updating.