The next step is to allow validation constraints to be expressed declaratively against your model, and for those constraints to be enforced on both the client-side and server-side.
下一步是让校验约束能够针对模型进行声明,并且这些约束在客户端和服务器端都被强制要求。
Automatic validation on incoming XML documents can be enforced as follows.
可以通过以下方式对进入的XML文档执行自动验证。
Uniqueness in the CCD table must be enforced — either by a primary key or unique index on the source table or CCD table.
ccd表中必须有惟一性约束——可以通过主键或者源表或ccd表上的惟一索引实现。
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