如果我想从We b层查找约束验证，我该如何去做？又能获得什么？

If I want to look up the constraint validations from the web tier how do I do this and what do I get back?

youdao

我不知道该如何是好，但是我还是能选择去做某件事。

I don't know exactly what to do, but I can choose to do something.

youdao

这并不是说我完全知道该如何去做。

This isn't to say that I know exactly how to do it.

youdao