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You work as a database administrator for Certkiller .com. 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

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出自：Oracle认证

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