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“学生—选课—课程”数据库中的如下三个关系： 学生基本信息：S(S#, SNAME, SEX, AGE) 选课信息：SC(S#, C#, GRADE) 课程信息：C(C#, CNAM...
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中级软件设计师《单项选择》真题及答案
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在学生一选课一课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
在学生一选课一课程数据库中的三个关系如下 SS#SNAMESEXAGESCS#C#GRADECC#
学生—选课—课程数据库中的如下三个关系 学生基本信息SS#SNAMESEXAGE 选课
S和SC
SC和C
S和C
S、SC和C
在学生-选课-课程数据库中的三个关系如下 SS#SNAMESEXAGESCS#C#GRADECC#
基于学生-选课-课程数据库中如下三个关系SS#SNAMESEXAGESCS#C#GRADECC#CN
S和SC
SC和C
S和C
S、SC和C
在学生一选课一课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
以下三个小题基于学生选课课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选课信息S
S和SC
SC和C
S和C
S、SC和C
在学生—选课—课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
在学生—选课—课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
35至37题基于基于学生-选课-课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选
S和SC
SC和C
S和C
S、SC和C
第24至26题基于学生-选课-课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选课
S和SC
SC和C
S和C
S、SC和C
在学生—选课—课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
在学生-选课—课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
以下三个小题基于学生选课课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选课信息S
只有Ⅰ
只有Ⅱ
只有Ⅲ
都正确
执行4题的命令序列后三个数据库指针联动的情况应该是
学生数据库的指针带动课程数据库和选课数据库的指针移动
课程数据库的指针带动学生数据库和选课数据库的指针移动
选课数据库的指针带动学生数据库和课程数据库的指针移动
学生数据库和选课数据库的指针随着课程数据库的指针移动
学生—选课—课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选课信息SCS#C#G
S和SC
SC和C
S和C
S、SC和C
某学生-选课-课程数据库中的如下三个关系学生基本信息SS#SNAMESEXAGE选课信息SCS#C#
S和C
S和SC
SC和C
S、SC和C
基于学生选课课程数据库中的如下三个关系 学生基本信息SS#SNAMESEXAGE 选课
S和SC
SC和C
S和C
S、SC和C
在学生一选课一课程数据库中的三个关系如下SS#SNAMESEXAGESCS#C#GRADECC#CN
在学生—选课—课程数据库中的三个关系如下 SS#SNAMESEXAGESCS#C#GRADECC#
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Certificatesare16documentsattestingtothe17ofapublickeytoanindividualorotherentity.Theyallowverificationoftheclaimthatagivenpublickeydoesinfactbelongtoagivenindividual.Certificateshelppreventsomeonefromusingaphonykeyto18someoneelse.IntheirsimplestformCertificatescontainapublickeyandaname.Ascommonlyusedacertificatealsocontainsan19datethenameoftheCAthatissuedthecertificateaserialnumberandperhapsotherinformation.Mostimportantlyitcontainsthedigital20ofthecertificateissuer.ThemostwidelyacceptedformatforcertificatesisX.509thusCertificatescanbereadorwrittenbyanyapplicationcomplyingwithX.509.
OriginallyintroducedbyNetscapeCommunications1areageneralmechanismwhichHTFPServersideapplicationssuchasCGI2canusetobothstoreandretrieveinformationontheHTTP3sideoftheconnection.BasicallyCookiescanbeusedtocompensateforthe4natureofHTTP.Theadditionofasimplepersistentclient-sidestatesignificantlyextendsthecapabilitiesofWWW-based5.
DOMisaplatform-andlanguage-21APIthatallowsprogramsandscriptstodynamicallyaccessandupdatethecontentstructureandstyleofWWWdocumentscurrentlydefinitionsforHTMLandXMLdocumentsarepartofthespecification.Thedocumentcanbefurtherprocessedandtheresultsofthatprocessingcanbeincorporatedbackintothepresented22.DOMisa23-basedAP1todocumentswhichrequiresthewholedocumenttoberepresentedin24whileprocessingit.AsimpleralternativetoDOMistheevent-basedSAXwhichcanbeusedtoprocessverylarge25documentsthatdonotfitinfothememoryavailableforprocessing.
Thepurposeoftherequirementsdefinitionphaseistoproduceaclearcompleteconsistentandtestable36ofthetechnicalrequirementsforthesoftwareproduct.Duringtherequirementsdefinitionphasetherequirementsdefinitionteamusesaninterativeprocesstoexpandabroadstatementofthesystemrequirementsintoacompleteanddetailedspecificationofeachfunctionthatthesoftwaremustperformandeach37thatitmustmeet.Thestartingpointisusuallyasetofhighlevelrequirementsfromthe38thatdescribetheprojectorproblem.Ineithercasetherequirementsdefinitionteamformulatesanoverallconceptfor’thesystemandthendefines39showinghowthesystemwillbeoperatedpublishesthesystemandoperationsconceptdocumentandconductsasystemconceptreviewSCR.FollowingtheSCRtheteamderives40requirementsforthesystemfromthehighlevelrequirementsandthesystemandoperationsconceptusingstructuredorobject-orientedanalysis.Theteamspecifiesthesoftwarefunctionsandalgorithmsneededtosatisfyeachdetailedrequirement.
WebSQLisaSQL-like6languageforextractinginformationfromtheweb.Itscapabilitiesforperformingnavigationofweb7makesitausefultoolforautomatingseveralweb-relatedtasksthatrequirethesystematicprocessingofeitherallthelinksina8allthepagesthatcanbereachedfromagivenURLthrough9thatmatchapatternoracombinationofboth.WebSQLalsoprovidestransparentaccesstoindexserversthatcanbequeriedviatheCommon10Interface.
商业秘密是我国21保护的一项重要内容它包括技术秘密和经营秘密两项基本内容
标准化是一门综合性学科其工作内容极为广泛可渗透到各个领域标准化工作的特征包括横向综合性政策性和2
DOMisaplatform-andlanguage-21APIthatallowsprogramsandscriptstodynamicallyaccessandupdatethecontentstructureandstyleofWWWdocumentscurrentlydefinitionsforHTMLandXMLdocumentsarepartofthespecification.Thedocumentcanbefurtherprocessedandtheresultsofthatprocessingcanbeincorporatedbackintothepresented22.DOMisa23-basedAP1todocumentswhichrequiresthewholedocumenttoberepresentedin24whileprocessingit.AsimpleralternativetoDOMistheevent-basedSAXwhichcanbeusedtoprocessverylarge25documentsthatdonotfitinfothememoryavailableforprocessing.
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1是指在经济技术科学及管理等社会实践中对重复性事物和概念通过制定发布和实施标准达到统一以获得最佳秩序和最大社会效益
软件能力成熟度模型CMMCapabilityMaturityModel描述和分析了软件过程能力的发展与改进的程度确立了一个软件过程成熟程度的分级标准在初始级软件过程定义几乎处于无章法可循的状态软件产品的成功往往依赖于个人的努力和机遇在9已建立了基本的项目管理过程可对成本进度和功能特性进行跟踪在10用于软件管理与工程两方面的软件过程均已文档化标准化并形成了整个软件组织的标准软件过程在已管理级对软件过程和产品质量有详细的度量标准在11通过对来自过程新概念和新技术等方面的各种有用信息的定量分析能够不断地持续地对过程进行改进
OriginallyintroducedbyNetscapeCommunications1areageneralmechanismwhichHTFPServersideapplicationssuchasCGI2canusetobothstoreandretrieveinformationontheHTTP3sideoftheconnection.BasicallyCookiescanbeusedtocompensateforthe4natureofHTTP.Theadditionofasimplepersistentclient-sidestatesignificantlyextendsthecapabilitiesofWWW-based5.
某程序员利用他人已有的财务管理信息系统软件中所用的处理过程和运算方法为某企业开发出财务管理软件则该程序员18
Networkscanbeinterconnectedbydifferentdevices.Inthephysicallayernetworkscanbeconnectedby31orhubswhichjustmovethebitsfromonenetworktoanidenticalnetwork.Onelayerupwefindbridgesandswitcheswhichoperateatdatalinklayer.Theycanaccept32examinetheMACaddressandforwardtheframestoadifferentnetworkwhiledoingminorprotocoltranslationintheprocess.Innetworklayerwehaveroutersthatcanconnecttwonetworks.Iftwonetworkshave33networklayerthemutermaybeabletotranslatebetweenthepackerformats.Inthetransportlayerwefindtransportgatewaywhichcaninterfacebetweentwotransportconnections.Finallyintheapplicationlayerapplicationgatewaystranslatemessage34.AsanexamplegatewaysbetweenInternete-mailandX.400e-mailmust35thee-mailmessageandchangevariousheaderfields.
Networkscanbeinterconnectedbydifferentdevices.Inthephysicallayernetworkscanbeconnectedby31orhubswhichjustmovethebitsfromonenetworktoanidenticalnetwork.Onelayerupwefindbridgesandswitcheswhichoperateatdatalinklayer.Theycanaccept32examinetheMACaddressandforwardtheframestoadifferentnetworkwhiledoingminorprotocoltranslationintheprocess.Innetworklayerwehaveroutersthatcanconnecttwonetworks.Iftwonetworkshave33networklayerthemutermaybeabletotranslatebetweenthepackerformats.Inthetransportlayerwefindtransportgatewaywhichcaninterfacebetweentwotransportconnections.Finallyintheapplicationlayerapplicationgatewaystranslatemessage34.AsanexamplegatewaysbetweenInternete-mailandX.400e-mailmust35thee-mailmessageandchangevariousheaderfields.
OriginallyintroducedbyNetscapeCommunications1areageneralmechanismwhichHTFPServersideapplicationssuchasCGI2canusetobothstoreandretrieveinformationontheHTTP3sideoftheconnection.BasicallyCookiescanbeusedtocompensateforthe4natureofHTTP.Theadditionofasimplepersistentclient-sidestatesignificantlyextendsthecapabilitiesofWWW-based5.
DOMisaplatform-andlanguage-21APIthatallowsprogramsandscriptstodynamicallyaccessandupdatethecontentstructureandstyleofWWWdocumentscurrentlydefinitionsforHTMLandXMLdocumentsarepartofthespecification.Thedocumentcanbefurtherprocessedandtheresultsofthatprocessingcanbeincorporatedbackintothepresented22.DOMisa23-basedAP1todocumentswhichrequiresthewholedocumenttoberepresentedin24whileprocessingit.AsimpleralternativetoDOMistheevent-basedSAXwhichcanbeusedtoprocessverylarge25documentsthatdonotfitinfothememoryavailableforprocessing.
我国著作权法中对公民作品的发表权的保护期限是23
MelissaandLoveLettermadeuseofthetrustthatexistsbetweenfriendsorcolleagues.Imaginereceivingan26fromafriendwhoasksyoutoopenit.ThisiswhathappenswithMelissaandseveralothersimilaremail27.Uponrunningsuchwormsusuallyproceedtosendthemselvesouttoemailaddressesfromthevictim’saddressbookpreviousemailswebpages28.Asadministratorsseektoblockdangerousemailattachmentsthroughtherecognitionofwell-known29viruswritersuseotherextensionstocircumventsuchprotection.Executable.exefilesarerenamedto.batand.cmdplusawholelistofotherextensionsandwillstillrunandsuccessfullyinfecttargetusers.Frequentlyhackerstrytopenetratenetworksbysendinganattachmentthatlookslikeaflashmoviewhichwhiledisplayingsomecuteanimationsimultaneouslyrunscommandsinthebackgroundtostealyourpasswordsandgivethe30accesstoyournetwork.
某学院张老师在某大学进修时获取了该大学李教授编制的考试试卷之后将该套试卷收入其编写的典型试卷分析并将该典型试卷分析出版则张老师15
MIDIenablespeopletouse11computersandelectronicmusicalinstruments.ThereareactuallythreecomponentstoMIDIthecommunications12.theHardwareInterfaceandadistribution13calledStandardMIDIFiles.InthecontextoftheWWWthemostinterestingcomponentisthe14Format.InprincipleMIDIfilescontainsequencesofMIDIProtocolmessages.HoweverwhenMIDIProtocol15arestoredinMIDIfilestheeventsarealsotime-stampedforplaybackinthepropersequence.MusicdeliveredbyMIDIfilesisthemostcommonuseofMIDItoday.
甲将其一篇短文心灵的呼唤投递给杂志社未经甲的许可杂志社便委托乙对甲的短文进行修改然后杂志社将署名为乙和甲的短文发表在其刊物上则14
WebSQLisaSQL-like6languageforextractinginformationfromtheweb.Itscapabilitiesforperformingnavigationofweb7makesitausefultoolforautomatingseveralweb-relatedtasksthatrequirethesystematicprocessingofeitherallthelinksina8allthepagesthatcanbereachedfromagivenURLthrough9thatmatchapatternoracombinationofboth.WebSQLalsoprovidestransparentaccesstoindexserversthatcanbequeriedviatheCommon10Interface.
MelissaandLoveLettermadeuseofthetrustthatexistsbetweenfriendsorcolleagues.Imaginereceivingan26fromafriendwhoasksyoutoopenit.ThisiswhathappenswithMelissaandseveralothersimilaremail27.Uponrunningsuchwormsusuallyproceedtosendthemselvesouttoemailaddressesfromthevictim’saddressbookpreviousemailswebpages28.Asadministratorsseektoblockdangerousemailattachmentsthroughtherecognitionofwell-known29viruswritersuseotherextensionstocircumventsuchprotection.Executable.exefilesarerenamedto.batand.cmdplusawholelistofotherextensionsandwillstillrunandsuccessfullyinfecttargetusers.Frequentlyhackerstrytopenetratenetworksbysendinganattachmentthatlookslikeaflashmoviewhichwhiledisplayingsomecuteanimationsimultaneouslyrunscommandsinthebackgroundtostealyourpasswordsandgivethe30accesstoyournetwork.
Certificatesare16documentsattestingtothe17ofapublickeytoanindividualorotherentity.Theyallowverificationoftheclaimthatagivenpublickeydoesinfactbelongtoagivenindividual.Certificateshelppreventsomeonefromusingaphonykeyto18someoneelse.IntheirsimplestformCertificatescontainapublickeyandaname.Ascommonlyusedacertificatealsocontainsan19datethenameoftheCAthatissuedthecertificateaserialnumberandperhapsotherinformation.Mostimportantlyitcontainsthedigital20ofthecertificateissuer.ThemostwidelyacceptedformatforcertificatesisX.509thusCertificatescanbereadorwrittenbyanyapplicationcomplyingwithX.509.
Networkscanbeinterconnectedbydifferentdevices.Inthephysicallayernetworkscanbeconnectedby31orhubswhichjustmovethebitsfromonenetworktoanidenticalnetwork.Onelayerupwefindbridgesandswitcheswhichoperateatdatalinklayer.Theycanaccept32examinetheMACaddressandforwardtheframestoadifferentnetworkwhiledoingminorprotocoltranslationintheprocess.Innetworklayerwehaveroutersthatcanconnecttwonetworks.Iftwonetworkshave33networklayerthemutermaybeabletotranslatebetweenthepackerformats.Inthetransportlayerwefindtransportgatewaywhichcaninterfacebetweentwotransportconnections.Finallyintheapplicationlayerapplicationgatewaystranslatemessage34.AsanexamplegatewaysbetweenInternete-mailandX.400e-mailmust35thee-mailmessageandchangevariousheaderfields.
MIDIenablespeopletouse11computersandelectronicmusicalinstruments.ThereareactuallythreecomponentstoMIDIthecommunications12.theHardwareInterfaceandadistribution13calledStandardMIDIFiles.InthecontextoftheWWWthemostinterestingcomponentisthe14Format.InprincipleMIDIfilescontainsequencesofMIDIProtocolmessages.HoweverwhenMIDIProtocol15arestoredinMIDIfilestheeventsarealsotime-stampedforplaybackinthepropersequence.MusicdeliveredbyMIDIfilesisthemostcommonuseofMIDItoday.
MIDIenablespeopletouse11computersandelectronicmusicalinstruments.ThereareactuallythreecomponentstoMIDIthecommunications12.theHardwareInterfaceandadistribution13calledStandardMIDIFiles.InthecontextoftheWWWthemostinterestingcomponentisthe14Format.InprincipleMIDIfilescontainsequencesofMIDIProtocolmessages.HoweverwhenMIDIProtocol15arestoredinMIDIfilestheeventsarealsotime-stampedforplaybackinthepropersequence.MusicdeliveredbyMIDIfilesisthemostcommonuseofMIDItoday.
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