单选题You have two database servers SEMP and SACCT. The database in the SEMP server maintains theemployee information and the database in the SACCT server maintains the accounts payable  information.The employees submit the expense reports to the accounts pa

题目
单选题
You have two database servers SEMP and SACCT. The database in the SEMP server maintains theemployee information and the database in the SACCT server maintains the accounts payable  information.The employees submit the expense reports to the accounts payable department. A user of the accountspayable database wants to extract the employee information from the database in the SEMP server for cross-verification.  Which schema object enables the user to access the information from the remote database()
A

Cluster

B

Database link

C

Mapping table

D

Materialized view

参考答案和解析
正确答案: B
解析: 暂无解析
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相似问题和答案

第1题:

You are the administrator of three SQL Server 2000 computers at Five Lakes Publishing. One server, FLPSQL01, stores order data. You want to be able to use the other two servers, FLPSQL02 and FLPSQL03, to answer queries and run report. The planned network configuration is shown in the exhibit.

You want to use the database Maintenance Plan wizard to configure log shipping from FLPSQL01 to FLPSQL02 and FLPSQL03. You do not want users to add any new data on FLPSQL02 and FLPSQL03, but they must be able to run queries and reports.

Which two actions should you take? (Each correct answer presents part of the solution. Choose two)

A.Set the database load state for each destination server to No recovery mode.

B.Set the database load state for each destination server to standby mode.

C.Enable the allow database to assume primary role option for both destination servers.

D.Enable the allow database to assume primary role option for one destination server and then disable this option for other destination server.

E.Disable the allow database to assume primary role option for both destination servers.


正确答案:BE
解析:Explanation:B:Astandbyservercanbemaintainedtotaketheplaceoftheprimaryproductionserver,ifneeded.AstandbyserverisasecondarySQLServerinstallationthatiskeptup-to-datewithaprimarySQLServerinstallationthroughtheapplicationoftransactionlogbackupfiles.Youcanautomatetheprocessofmaintainingastandbyserverbycreatingbackup,copy,andrestorejobsthatareperiodicallyexecutedbySQLServerAgentontheprimaryserverandonthestandbyserver.Thisautomatedprocessiscalledlogshipping.Ifyouwantthedestinationdatabasetobeviewableforread-onlyqueries,youmustselecttheStandbyModeoption,thedefaultistheNoRecoveryModeoption.TheStandbymodespecifiesthatthesecondarydatabasebemadeavailableforuse,butinread-onlymode.E:Wedon'twantuserstoaddanydataonFLPSQL02orFLPSQL03.Thereforeweshoulddisabletheallowdatabasetoassumeprimaryroleoptionforthem.IfthisoptionwereenabledFLPSQL02andFLPSQL03wouldbeabletobeusedassourceservers.IncorrectAnswers:A:Thenorecoverymodespecifiesthatthesecondarydatabasebemadeunavailableforuse.WeneedstandbymodesincewewantFLPSQL02andFLPSQL03usedforqueriesandreports.Note:TheactiveportionofthetransactionlogontheprimaryservercanbebackedupusingtheNORECOVERYbackupoption.Thisoptionleavestheprimarydatabaseinrecoverymode.Whentheprimaryserverisreadytobebroughtbackonline,thetransactionlogsfromthestandbyserver(fortheperiodthatuserswereusingthestandbyserverastheprimaryserver)canbeappliedtotheprimaryserver.Thisavoidsthenecessityofapplyingacompletedatabasebackupandallapplicabletransactionlogstorestoretheprimaryserver.Theresultisasignificantdecreaseinthetimerequiredtobringtheprimaryserverbackonline.C:Theprimaryroleoptionmustbedisabledforbothdestinationservers.Ifnottheywouldbeabletochangeandupdatedata.D:Theprimaryroleoptionmustbedisabledforbothdestinationservers.Ifnottheywouldbeabletochangeandupdatedata.

第2题:

You work as a database administrator for Supportcenter.cn. You want to administer your database servers, which are running on different host machines, using the Web-enabled grid control interface. You have configured the agent on the host machines. You have started the Oracle Database 10g Grid Control utility on your machine. Which two additional components would you configure to achieve this objective?()

  • A、Application Server Control
  • B、Oracle Management Service
  • C、Oracle Enterprise Manager Repository
  • D、Oracle Enterprise Manager Database Control

正确答案:C,D

第3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.

What should you do?

A.Enable the torn page detection database option for each database.

B.Disable write caching on all disk controllers.

C.Ensure that write caching disk controllers have battery backups.

D.Create a database maintenance plan to check database integrity and make repairs each night.


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

第4题:

You work in a company which is named Wiikigo Corp. The company 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 an internal application which uses Analysis Services and Reporting Services. You use the application on the basis of SQL Server 2008. According to the requirement of company security policy, the surface area for all the deployed components of SQL Server 2008 should be configured. You have to implement the security policy and devise a method to evaluate the security policy against other database servers. What should you do?()  

  • A、You should create policies based on the appropriate facets. Apply the policies against a server group. The server group includes the database servers that need to be configured 
  • B、You should create a Transact-SQL script based on the sp_configure stored procedure. Use a configuration server to run the script against a server group that includes the database servers that need to be configured 
  • C、You should edit the RSReportServer.config configuration file. Distribute the file to all database servers that need to be configured 
  • D、You should analyze your database servers by using the SQL Server Best Practices Analyzer (BPA). Implement the recommendations of the BPA

正确答案:A

第5题:

You have two database servers SEMP and SACCT. The database in the SEMP server maintains theemployee information and the database in the SACCT server maintains the accounts payable  information.The employees submit the expense reports to the accounts payable department. A user of the accountspayable database wants to extract the employee information from the database in the SEMP server for cross-verification.  Which schema object enables the user to access the information from the remote database()

  • A、Cluster
  • B、Database link
  • C、Mapping table
  • D、Materialized view

正确答案:B

第6题:

You are the administrator of two Microsoft Windows 2000 advanced server computers. On these servers, you are configuring a database that will store accounting information for your company.

The data must be available at all times. Interruptions in data connectivity should not last longer than five minutes. Any changes to the database should not require you to reconfigure the client computers.

How should you configure the database?

A.Configure the database on the two servers as a SQL Server 2000 cluster.

B.Configure the database on one server, and then configure a standby database on the second server.

C.Configure the database on each server. Use Microsoft Distributed Transaction Coordinator to keep the two servers perfectly synchronized.

D.Configure the database as a federated database, and then partition half the data on each server.


正确答案:A
解析:Explanation: SQL Server 2000 failover clustering provides high availability support by allowing us to configure one failover cluster to automatically, with no manual configuration, fail over to any other node in the failover cluster configuration. In this way, we minimize system downtime and provide high server availability during an operating system failure or a planned upgrade. Before SQL Server 2000 failover clustering can be set up, we must install Windows NT 4.0, Enterprise Edition, Windows 2000 Advanced Server or Windows 2000 Datacenter Server, and the Microsoft Cluster Service (MSCS).

In this scenario a cluster would be preferred to a standby server because it would be available immediately. A standby server on the other would require manual configuration and more time to become online.

Incorrect Answers:
B: A standby server would require you to reconfigure clients to allow it to connect to the standby server when the main server goes down. It would require at least several minutes of manual administration before the standby server would be operational. But the scenario requires that no reconfiguration of the client computers should be necessary. Therefore we should use a SQL Server 2000 cluster not a standby server.

Note: A standby server is a second server that contains a copy of the databases on the primary server and that can be brought online in the event of a primary server failure or due to scheduled maintenance on the primary server. This allows users to continue working with databases when the primary server becomes unavailable. When the primary server becomes available again, any changes to the standby server's copies of databases must be restored back to the primary server.

C: The Microsoft Distributed Transaction Coordinator coordinates distributed transactions, but would not increase availability.

Note: The Microsoft Distributed Transaction Coordinator (MS DTC) is a transaction manager that allows client applications to include several different sources of data in one transaction. MS DTC coordinates committing the distributed transaction across all the servers enlisted in the transaction.

An installation of SQL Server 2000 can participate in a distributed transaction by calling stored procedures on remote servers running SQL Server, automatically or explicitly promoting the local transaction to a distributed transaction and enlist remote servers in the transaction, and making distributed updates that update data on multiple OLE DB data sources. If these OLE DB data sources support the OLE DB distributed transaction interface, SQL Server 2000 can also enlist them in the distributed transaction. The MS DTC service coordinates the proper completion of the distributed transaction to ensure that either all of the updates on all the servers are made permanent, or, in the case of errors, all erased.

D: With Federated SQL Server 2000 servers, SQL Server 2000 databases can be spread across a group of autonomous database servers. These are capable of supporting the processing growth requirements of the largest Web sites and enterprise data-processing systems built with Microsoft Windows DNA, which divides the processing units of a data processing system into logical tiers. This however does not improve availability.

第7题:

You have two database servers SEMP and SACCT. The database in the SEMP server maintains the employeeinformation and the database in the SACCT server maintains the accounts payable information. The employeessubmit the expense reports to the accounts payable department. A user of the accounts payable databasewants to extract the employee information from the database in the SEMP server for cross-verification.  Whichschema object enables the user to access the information from the remote database()

  • A、Cluster
  • B、Database link
  • C、Mapping table
  • D、Materialized view

正确答案:B

第8题:

You are the administrator of two SQL Server 2000 computers. One of these servers contains a 4-GB database named marketing. You want to remove the marketing database from one server and add it to the other as quickly as possible.

What should you do?

A.Detach the database from the original server by using the sp_detach_db stored procedure. Copy the database and the transaction log files to the new server, and attach them by using the sp_attach_db stored procedure.

B.Use the DTS export wizard to transfer all database objects from the original server to the new server. Drop the database from the original server.

C.Run a full backup of the database on the original server. Create a new database named marketing on the new server. Restore the backup in the new marketing database. Drop the database from the original server.

D.Shut down the original server. Copy the database and the transaction log files to the new server. Use the DISK INIT and DISK REFIT statements to attach the data file to the new server. Drop the database from the original server.


正确答案:A
解析:Explanation:Detachingandattachingdatabasesissometimesausefultechniqueforquicklymovingadatabasefromonecomputertoanother.Tomoveadatabase,ordatabasefile,toanotherserverordiskthedatabasemustfirstbedetachedfromtheoriginalserverordisk;movedtotheotherserverordiskandthenattachedontheserverordisk.Inadditionthenewlocationofthemovedfile(s)mustbespecified.Thesp_detach_dbstoredprocedureisusedtodetachthedatabaseandcanrunUPDATESTATISTICSonalltablesbeforedetachingthedatabasewhilethesp_attach_dbstoredprocedureisusedtoattachthedatabaseinitsnewlocation.IncorrectAnswers:B:DTScanimportdatafromatextfileorfromanOLEDBdatasourcesuchasaMicrosoftAccess2000databaseintoSQLServer.ItcanalsoexportdatafromSQLServertoanOLEDBdatadestination.Itprovidesforhigh-speeddataloadingfromtextfilesintoSQLServertables.However,itisnotthefastestwaytomoveawholedatabasefromoneservertoanother.C:Beforeadatabasecanberestoredfromabackuptoanewlocation;thedatabasemustfirstberecreatedinthedestinationasthebackupholdsonlythedatafilesthatbelonginthevarioustables.Itdoesnotholdthetabledefinitions.Thisisnotthefastestmethodtomoveadatabase.D:TheDISKINITandDISKREFITcommandscannotbeusedtomoveadatabasefromoneservertoanother.Note:DISKINITandDISKREINITarefeaturesthatareusedinaSQLServer6.x.inSQLServer6.x,DISKINITisusedtocreatedatabaseortransactionlogdevicestostorethespecifieddatabaseortransactionlogwhenDISKINITfollowedeitheraCREATEDATABASEorALTERDATABASEstatementwhileDISKREINITisusedtorestoredeviceentriestoappropriatesystemtableswhenthedeviceentrywasmissingfromsysdevices.InSQLServer2000theCREATEDATABASEandALTERDATABASEstatementsallowforthecreationofseparatedataandlogfiles.BothCREATEDATABASEandALTERDATABASEcreateoperatingsystemfilesanddatabasesinasinglestep.ItisthusrecommendedthatallreferencestoDISKINITshouldberemovedinSQLServer2000andreplacedwithreferencestoeitherCREATEDATABASEorALTERDATABASE.

第9题:

You work as a database administrator for Certkiller .com. You have been asked to use a centralized administrative tool to administer your database servers and application servers. In order to achieve the objective, which component would you configure on each database server?()

  • A、Database Control
  • B、Management Server
  • C、Management Repository
  • D、Application Server Control
  • E、Oracle Management Agent

正确答案:E

第10题:

You need to design a Windows Server Update Services (WSUS) infrastructure that meets the  following requirements:   èThe updates must be distributed from a central location.   èAll computers must continue to receive updates in the event that a server fails. What should you include in your design?()

  • A、Configure two WSUS servers in a Microsoft SQL Server 2008 failover cluster. Configure each WSUS  server to use a local database.
  • B、Configure a single WSUS server to use multiple downstream servers. Configure each WSUS server touse a RAID 1 mirror and a local database.
  • C、Configure a single WSUS server to use multiple downstream servers. Configure each WSUS server to  use a RAID 5 array and a local database.
  • D、Configure a Microsoft SQL Server 2008 failover cluster. Configure two WSUS servers in a Network Load Balancing cluster. Configure WSUS to use the remote SQL Server 2008 database instance.

正确答案:D

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