[单选] What is true about updates through a view? （）

A . You cannot update a view with group functions.
B . When you update a view group functions are automatically computed.
C . When you update a view only the constraints on the underlying table will be in effect.
D . When you update a view the constraints on the views always override the constraints on the underlying tables.

How long will this backup be allowed to run？（） Backup as compressed backupset duration 2：00 minimize load database 2 minutes。 2 hours。 2 days。 The command will generate an error.。 This backup is not constrained by any time limitation.。距离保护第一段的保护范围是（）。被保护线路的一半。被保护线路的全长。被保护线路全长的80%。下列关于风险的描述，不正确的是：（）风险是客观的。风险是相对的、变化的。风险是不可测量的。风险和收益成正比。 Given: What is the result?（） Compilation succeeds.。 Compilation fails due to multiple errors.。 Compilation fails due to an error only on line 20.。 Compilation fails due to an error only on line 21.。 Compilation fails due to an error only on line 22.。 Compilation fails due to an error only on line 12.。加权申请表 What is true about updates through a view? （）

参考答案：

● 参考解析

本题暂无解析

当前位置：1Z0-007题库

[单选] What is true about updates through a view? （）

相关题目: