单项选择题
A.sys.dm_os_wait_stats
B.sys.dm_exec_requests
C.sys.dm_exec_sessions
D.sys.dm_exec_query_stats
单项选择题 You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance which contains a database. According to the company requirement， you have to move the application from Microsoft SQL Server 2000 to Microsoft SQL Server 2008. You have to monitor the SQL Server instance to record the use of features. These features will be discontinued. What should you do？ （）
单项选择题 You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a remote SQL Server 2008 instance. You notice that the application has a poor performance. On the remote SQL Server instance， you capture a workload of the remote instance to a trace table by using SQL Profiler. Now you have to use the Database Engine Tuning Advisor to analyze the workload of the remote SQL Server instance on a local SQL Server instance. So what action should you perform to achieve this goal？（）
单项选择题 You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a management data warehouse that uses the data collector to collect performance data. You intend to maintain the management data. You want to implement a data collection process. The process can gather and upload data in the management data warehouse on different schedules. What process should you implement？（）