要清理由于这种更改而无效的任何现有包，可以使用这个新功能来找出数据库或架构级别上的无效包。
To clean up any existing packages that are invalid as a result of this change, you can use the new function to find invalid packages on a database or schema level.
超过应用程序功能的期望值或界限(例如，当输入无效的信用卡号时，恰当的错误处理启动了吗？)
Exceeding expected values or boundaries of the application's function (e.g., does the right error handling get triggered when entering an invalid credit card number?)
这不仅是一个可以轻松解决的简单问题，而且，当数据源出现延迟或停用时，客户端不会出现没有响应或功能无效的混乱状态。
This is not only an easier problem to solve, but also, in the presence of delay or downtime from the data sources, the client isn't left with an unresponsive or non-functioning mess.
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