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单项选择题You work as a database administrator for Supportcenter.cn. You want to be notified when the number of disk I/O increases by 10% of what it was yesterday. You create a baseline metric for yesterday’s disk I/O performance. How do you use the baseline metrics to achieve your objective？（）

A、Save the baseline in the database

B、Save the baseline in the Database Control Home Page

C、Create a procedure to read and apply the baseline to disk I/O metrics

D、Apply the baseline to the disk I/O metrics in the Mange Metrics page

E、Alter the disk I/O metrics to include baseline by using the ALTER METRICScommnd

  • D

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