基于java在线考试系统毕业设计外文翻译.docx

基于java在线考试系统毕业设计外文翻译.docx

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基于java在线考试系统毕业设计外文翻译

毕业设计说明书

英文文献及中文翻译

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Regardalongwiththenetworktechnologydailypopularizationandtheinformationconstruction,nowtheschoolgenerallyallcompoundedthetestsafemonitoringequipment,andhasbuiltthemanagementinformationsysteminthisfoundation,toinformationconstructionpositiveimpetusfunction.Buthasthesoftwareconstructioninthepracticalworktofallbehindthephenomenonwhichconstructstothehardware,forexample,theeducationadministrationlevelalsopausestoexaminee'sinspectioninthetraditionaltestpattern,notonlytheefficiencyislow,moreoveralsohasmanymalpractices,createstheinformationresourcethewaste.

Testnon-paper,network,notonlycaneffectivelyreducethecorrelationpersonnel'sworkload,thebetterusecomputerandthenetworksuperiority,enhancestheworkingefficiency,alsocanfairlycausethetest,tobefair.Basedonthiskindofdemand,wedevelopedsetofperformancestablyforthetestdesign,safehavebeenreliablethenetworkwhich,theeaseofoperationwasallowedtosatisfymassivelysimultaneouslyusestotakeatestthesystem.Causesthetestthesecurity,fairness,fairgreatlytoenhance.Afterthissystemactualmovementuses,effectgood,notonlygreatlyadvancedthetestinformationconstructionadvancement,moreovercausestheschooltoexaminee'sinspectionmorescientific,air,fair,tobehighlyeffectiveandthenetwork.

Thenetworktestsystemshouldbeabletosatisfythemassiveexamineesinanyplace,anytimeallcanparticipateinthetest,andautomaticjudgmentresult.Throughtothetestservicedemandmultianalysis,themainfunctionwhichthissystemshouldprovideasfollows:

1）Theexamineemayon-linecarryonthetest,afterthetesthadfinishedbycomputerautomaticjudgmentscore,andtherecordingresult,theexamineealsomayexaminethestandardanswer.Ifthetesttime,thesystemautomaticpromptcompletesanassignmentandstopsdoinganswers.

2）Theteachermayon-lineestablishtherevisionquestionbank,revisestheexamineeindividualmaterial,andmonitorstheexaminationplacesituationandsoon.

3）themanagermayon-lineestablishreferencematerialandsoontheexaminee,teacher,theverificationquestionbank,arrangestheexamineetotakeatest,revisestheexamineeandtheexaminationplacecondition,inquirestheexamineetotakeatesttheresult,monitorstheexaminationplacesituationaswellastheestablishmenttestprojectwithteststhetestquestionnumberandsoon.

Moreoverfortheguaranteetestfair,isfair,theexaminationpapertestquestionstochasticallyextractsbythecomputerfromthequestionbank.Forstrictlywillceasethetesttocheatthebehavior,thesystemlaterisbestalsoshouldprovidethefunctionwhichthefingerprintconfirmationwillregister.

Itsmainflowis:

Aftertheuserbasisisauthorizedregisters,thesystembasisuserjurisdictiondifference,establishesthecorrespondingoperation.Afterthetrainattendantregistersmaycarryonthetest,operationandsoonexaminationresultandstandardanswer;Aftertheteacherregistersmaycarryonrevisesoperationandsoonexaminee'sindividualmaterial,revisionquestionbank,revisionuserpasswordaswellasmonitoringtestsituation;Afterthemanagerregistersbesideshasteacher'sallfunctions,butalsomaycarryontheverificationquestionbank（onlyhasverifiedquestionbankonlythentobeallowedtocarryontest）,establishmentoperationandsoontesttime,inquiry,printingtestresult.

Alsomayestablishfollowingseveralitems:

Testworkstation:

Carriesonthetesttotheexamineethecustomerendprocedure.Mainlyprovidedhascarriedonaccordingtothesystemdispositionstochasticallysetsthetopicofacomposition,theconfirmationregisters,testfunctionandsoontimeprompt,automaticjudgmentresult,examinationtestresultaswellasstandardanswer.TestworkstationdividesintothecustomerendprocedureandtheWebwayintherealizationway,formerallowstheexaminee（supporttouchesscreentestpattern）throughthecustomerendprocedurethewaytocarryonthetest,latterallowstheexamineetocarryonthetestthroughthetestspecial-purposenetwork.

Thetestestablishestheworkstation:

Carriesontheestablishmenttotetestservicethecustomerendprocedure.Mainlyprovidedtherevisionquestionbank,theverificationquestionbank,revisedtheexamineematerial,establishestheexaminee/examinationplacecondition,theinquiry/printingtestresult,thequestionbankinducts/derivesfunctionandsoonfunctionaswellasmonitoringtestsituation.

Testapplicationserver:

Networkon-linetestsystemapplicationserver.Mainlyhasrealizedthedatacushionandthetestservicelogicsealandduplicateusesthefunction,istakesatesttheworkstation,thetestestablishestheworkstationandthedatabaseserverconnection.Hasprovidedtherichconnectionusingtheserver,mayincreaseorthereducedservicerulethroughthemoduleway,consideredlaterwilltakeatesttheservicepromotion,alsoshouldreservethenewtesttypeconnectionusingtheserverlevel,willcauselaterthesystemtoexpandconveniently.Moreover,forguaranteetesteffectiveness,usingserversupporthotbackupdatabaseserverpattern,namelyifpresentlyisusingthedatabaseserverbreaksdown,theninthesystemdispositionreservedatabaseserverautomaticcutoverforthecurrentdatabaseserver,alltheseisdoesnotknowintheuserwithintheinterventionsituationcarrieson.Throughapplicationserverleveleffectiveness,trulycausedthetestservicetoachievetheuseeasily,thefunctionformidable,theperformancestable,themodulardegreewasstrong,hassatisfiedthenewtimetoaninformationconstructionhigherrequest.

Furthermore,consideredthesystemthestabilitywithcarriesouttheefficiency,intheanalysisnetworkconfigurationfoundation,thesystemlatermightselectdistributionalthreeC/SandB/Swillmixwiththeoverheadconstructionmethod,namely:

Theexamineeifmiscarriesonthetestinthissection,maychoosetheC/Sstructuretotouchthescreentestandtheexaminationsitetestpattern;Iftheexamineeiscarriesonthetestintheoutsideareas,maychoosetheB/Sstructuretheexaminationsitetestpattern.

Thenetworkon-linetestsystemneedstocarryonthedatathroughthenetworkthetransmission,thereforeappliestheserver,theWebserverandthedatabaseserversecuritymustfromthesystemdesigntimecarriesontheplan.Wemightusebelowthesecuritymeasure:

1）Installsthereliablefirewall,carriesontheeffectivecontainmenttotheexteriormaliciousattack.

2）Theserver（includingappliesserver,databaseserverandtheWebserver）theharddiskdistricttransformationistheNTFSform,opensuresportivejurisdictionaccordingtothedifferentdemandfortheuser.

3）MaywritetheessentialcodetheDLLmodule,notonlystrengtheneedthesecurity,simultaneouslyalsocausedthesystemthemodulardegreetostrengthen,enhancedthesystemperformance.

4）Maycarryontwotimesofencryptionsinthedatabasetotheessentialdata.

5）2,000databackupswithrestoresthefunctionusingSQLtheSERVER,guaranteesthedatabaseinformationtheintegrityandthesecurity.

Thecurrentsoftwarequitepopularsystemstructuralmodelmainlyhas:

C/SstructuralmodelandB/Sstructuralmodel.Thesetwokindsofstructuresmaydivideintotwowiththemultilayeredoverheadconsaturation,themaindifferenceliesinwhetherhasusedthemidleware（forexampleCOM+orCORBA）comestheoverheadconstructiontoapplytheserverlevel.ThisstructuralmodelunifieddistributionalmultilayeredC/SandtheB/Smeritdesigns,dividesintothecustomerlevel,businesslogiclevelandthedatalevelintheusualsituation.

Customerlevel:

Belowmainlyusesfortosatisfytheoverallsystemeachkindofvisitdemandandprocessesworks:

Thereceiveuser'sinput,carriesontheanalysisinspectiontouser'sinputandmakescorrespondingprocessing;Sendsoutthedatatotheservertorequestthat,demonstratedbymovementresultwhichtransmitsusingtheserver.Thecustomerlevelusuallyiscomposedbythecustomeradvancement,thecustomeradvancementmainlyincludestheadvancementinthismodelwhichtheIEbrowserdynamicfoundationtheadvancementaswellasthecustomerendtestworkstationfoundsandsoon.

Businesslogiclevel:

Willberesponsibletoreceivetherequestwhichwilltransmitfromthecustomerendorthetourandtorequestwillbequeaththefirstfloortocarryonprocessing,simultaneouslywillrequesttheprocessingresulttransmissionforthecustomerendorthebrowser.Businesslogicleveladvancementmainlyiscomposedby

middlewareMTS/COM+aswellassomerelatedprocessingadvancements.

MicrosoftCorporationhaspromotedWindowsDNAundertheWindowsplatform（DistributedinterNetApplicationArchitecture,distributionnetworkapplicationstructure）strategy.TakesWindowsCOM+intheDNAstrategythemiddleware.IntheWindows2,000aboveoperatingsystems,COM+hasbecomeasystempart.COM+wastheintermediatelevelhascharacteristicprovidedtheloadbalance,theobjectpond（ObjectPooling）,businesscharacteristicandsoonaseriesofforcesupport,andtheprocedurewhichworkedinCOM+receivestheoperatingsystemtheprotection,thusthebiggestguaranteesystemsecurity,stableandwashighlyeffective.

Inthismodel,mainlythroughtheADOrealizationdatadynamicration,ADOistheMicrosoftcurrentmainstreamdataaccessingmodule,compareswiththeformerdataaccessingtechnology,ithasprovidedtheextremelysimpleobjectmodel,andhasseal