In some cases, the model might actually generate the data at execution time.
在某些情况下，模型可以在执行期间实际生成数据。
Since the remote procedure referenced by the federated procedure is not managed by the federated server, the level chosen cannot be enforced during the execution of the procedure at the data source.
因为联邦过程所引用的远程过程不由联邦服务器进行管理，所以当过程在数据源上执行时无法强制实施选择的级别。
Validate data: statement hooks let you validate parameter data before statement execution, providing the opportunity to do constraint check and data validation at the application level.
验证数据：通过语句钩子可以在执行语句之前验证参数数据，从而为应用程序级的约束检查和数据验证提供机会。
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