In which scenario would TOP N analysis be the best solution? （） You want to identify the most senior employee in the company.。 You want to find the manager supervising the largest number of employees.。 You want to identify the person who makes the highest salary for all employees.。 You want to rank the top three sales representatives who have sold the maximum number of products.。
房地产的最佳使用必须满足（）。 法律上允许。 技术上可行。 经济上合理。 功能上完善。
Your database has experienced a loss of datafile users_01.dbf, which is associated with a ablespace called USERS. The database is still running. Which answer properly describes the rder of the steps that you would use to recover from this error?（） 1.Shut down the database. 2.Take the users_01.dbf datafile offline with the alter database command. 3.Restore the users_01.dbf datafile from backup media with the required archived redo logs. 4.Restore all users tablespace-related datafiles from backup media. 5.Issue the recover tablespace users command. 6.Issue the recover datafile users_01.dbf command. 7.Start up the database. 8.Bring the users_01.dbf datafile online with the alter database command. 1，3，6，7。 2，3，6，8。 1，2，3，6，7。 1，2，3，6，，7，8。 2，3，6，5，7。
A client wants to implement a highly available cluster between two sites. At each site the client has an IBMDS8300. At each site， the client would like a single node which will be connected through a SAN to the local DS8300but not the remote DS8300. Which clustering product could be used to provide high availability for this infrastructure？（） PowerHA/XD for GLVM。 PowerHA with cross-site LVM。 PowerHA/XD for Metro Mirror。 PowerHA/XD for Global Mirror。
所谓房地产的合法权益是指房地产的（）。 产权合法。 使用合法。 处分合法。 收益合法。
Which three statements about performance analysis by SQL Performance Analyzer are true? （）
