This upgrade does not require any change in application code or the database schema.
这种升级不需要在应用程序代码或数据库模式方面做任何更改。
2
The level of assurance that a schema can provide to an application depends on how well the schema translates application requirements into requirements on XML messages.
一个模式可以提供给应用程序的保证级别取决于这个模式如何很好地将应用程序需求转换为XML消息需求。
3
If the message that your application has to process has a complicated schema, your application has to do more work just to get to the data that it needs.