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【单选题】

You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its existing rows. Which type of SQL command would you use to transfer the data from the external table to the dimension table as efficiently as possible？（）

A、MERGE

B、SELECT …CROSS JOIN

C、INSERT ALL …SELECT

D、CREATE VIEW …CONSTRAINT

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更多“You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its existing rows. Which type of SQL command would you use to transfer the data from the external table to the dimension table as efficiently as possible？（）”相关的问题
第1题
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第2题
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第3题
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第4题
[单选题] You create 200 new user accounts. The users are located in six different sites. New users report that they receive the following error message when they try to log on： "The username or password is incorrect." You confirm that the user accounts exist and are enabled. You also confirm that the user name and password information supplied are correct. You need to identify the cause of the failure. You also need to ensure that the new users are able to log on Which utility should you 

A、Rsdiag  B、Rstools  C、Repadmin  D、Active Directory Domains and Trusts  

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第5题
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第6题
[] You are enabling the Automatic Shared Memory Management feature in the Oracle Database 10g to ensure that the important memory structures of the System Global Area （SGA） are automatically adjusted depending on the database workload. You are using Enterprise Manager 10g to enable this feature. You are currently on the Administration tab page.  Which two links should you click to go to the Memory Advisor page？（） You are enabling the Automatic Shared Memory Management feature in the Oracle Database 10g toQ

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第7题
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第8题
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A、ad  B、dallas  C、internal  D、external  E、Research  

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第9题
[单选题] You are employed as the exchange administrator at Company.com.the Company.com network contains an exchange 2010 organization.Company.com has its headquarters in stockholm where you are located.you are responsible for managing a mailbox server named -ex02.all users within the organization make use of microsoft office outlook 2010 to connect to the exchange organization.you receive an instruction to determine the latency of user connections to-ex02. What should you do？（）

A、You should consider running the Test-OutlookConnectivity cmdlet.  B、You should consider running the Exchange Best Practices Analyzer.  C、You should consider running the Test-OutlookWebServices cmdlet.  D、You should consider running the Message Tracking Performance tool.  

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第10题
[单选题] You are maintaining your database in Oracle10g. You are required to view the list of files that have not been backed up for the last seven days. Which RMAN command will you use？（）

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