If the remote tables have restrictions on the data such as check constraints, you can convey these restrictions to the federated server using informational check constraints.

如果远程表在数据上有检查约束，那么可以使用信息检查约束将这些约束传递到联邦服务器。

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Check constraints are constraints on table columns that are used to restrict the user to a particular check condition.

检查限制是表的列上的限制，用于将用户限制到特定的检查条件。

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The check constraints view allows you to create table check constraints for the table.

允许您为表创建表检查约束。

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And just to look ahead a little bit, you could easily imagine that I might want to not just put a statement in there, what the specs are, I might want to put some constraints. Some specific things to check for, to make sure that you're calling the code right.

这不仅是抽象的概念还有规范的概念，我们再往前看看,你可以简单的想象得到，我不仅仅是想在这里加一个声明,这些规范说明中我还想加一些约束，我们要注意一些特殊的事情。

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