[单选题]You are the database administrator of a SQL Server 2000 computer. The server contains your company's Accounts database. Hundreds of users access the database each day.Because you have had power interruptions in the past, you want to perfect the physical integrity of the Accounts database. You do not want to slow down server operations.

正确答案 ：D

Ensure that write caching disk controllers have battery backups.

解析：解析：Explanation:Thescenariostatesthatpowerinterruptionshaveoccurredinthepast.Bybuyingabatterybackupsolutionforthediskcontrollersthepowerinterruptionproblemwouldbeprevented.IncorrectAnswers:A:Tornpagedetectionisareactivesolutionwhichwouldslowdownperformancesincerestoreswouldhavetobemade.Itwouldbettertouseapreventivesolution.Note:Tornpagedetection:Ifatornpageisdetected,thedatabasemustberestoredfrombackupbecauseitwillbephysicallyinconsistent.B:Cachingisveryimportforperformance.Disablingwrite-cachingwouldbeabadidea.D:Repairingthedatabaseeverynightisnotagoodsolution.Databaseerrorscannotbeaccepted.Itisbettertopreventtheprobleminsteadoftryingtofixitafterithashappened.

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