ISO/IEC 9075-2-2003 信息技术.数据库语言.SQL.第2部分:基本原则(SQL/基本原则)
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【英文标准名称】:Informationtechnology—Databaselanguages—SQL—Part2:Foundation(SQL/Foundation)
【原文标准名称】:信息技术.数据库语言.SQL.第2部分:基本原则(SQL/基本原则)
【标准号】:ISO/IEC9075-2-2003
【标准状态】:作废
【国别】:国际
【发布日期】:2003-12-15
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC32
【标准类型】:()
【标准水平】:()
【中文主题词】:文献工作;信息技术;数据库语言;基础;语法;结构化询问语言;人工语言;数据结构;信息交换;文献;数据处理;定义;文本处理;事实数据库;处理
【英文主题词】:Artificiallanguages;Basis;Dataprocessing;Datastructures;Databaselanguages;Definition;Definitions;Documentations;Documents;Factualdatabases;Grammar;Informationinterchange;Informationtechnology;Processing;SQL;StructuredQueryLanguage;Textprocessings
【摘要】:ThispartofISO/IEC9075definesthedatastructuresandbasicoperationsonSQL-data.Itprovidesfunctionalcapabilitiesforcreating,accessing,maintaining,controlling,andprotectingSQL-data.ThispartofISO/IEC9075specifiesthesyntaxandsemanticsofadatabaselanguage:—ForspecifyingandmodifyingthestructureandtheintegrityconstraintsofSQL-data.—FordeclaringandinvokingoperationsonSQL-dataandcursors.—Fordeclaringdatabaselanguageprocedures.—ForembeddingSQL-statementsinacompilationunitthatotherwiseconformstothestandardforaparticularprogramminglanguage(hostlanguage).—Forderivinganequivalentcompilationunitthatconformstotheparticularprogramminglanguagestandard.Inthatequivalentcompilationunit,eachembeddedSQL-statementhasbeenreplacedbyoneormorestatementsinthehostlanguage,someofwhichinvokeanSQLexternally-invokedprocedurethat,whenexecuted,hasaneffectequivalenttoexecutingtheSQL-statement.—FordirectinvocationofSQL-statements.—TosupportdynamicpreparationandexecutionofSQL-statements.ThispartofISO/IEC9075providesavehicleforportabilityofdatadefinitionsandcompilationunitsbetweenSQL-implementations.ThispartofISO/IEC9075providesavehicleforinterconnectionofSQL-implementations.ImplementationsofthispartofISO/IEC9075mayexistinenvironmentsthatalsosupportapplicationprogramminglanguages,end-userquerylanguages,reportgeneratorsystems,datadictionarysystems,programlibrarysystems,anddistributedcommunicationsystems,aswellasvarioustoolsfordatabasedesign,dataadministration,andperformanceoptimization.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:1268P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingthe(In-plane)FlowRateperUnitWidthandHydraulicTransmissivityofaGeosyntheticUsingaConstantHead
【原文标准名称】:使用恒定压头测定土工合成织物(在平面中)单位宽度流速和液压透射率的试验方法
【标准号】:ASTMD4716-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D35.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:geosynthetics;hydraulictransmissivity;in-planeflow;indextest;performancetest;Gradientratio;Hydraulicconductivity/transmissivity;In-planeflow;Stress--geosynthetics;Surfaceanalysis--soil/rock/relatedmaterials;Transmissivityandrefle
【摘要】:Thistestmethodisintendedeitherasanindextestorasaperformancetestusedtodetermineandcomparetheflowrateperunitwidthofoneorseveralcandidategeosyntheticsunderspecificconditions.Thistestmethodmaybeusedasanindextestforacceptancetestingofcommercialshipmentsofgeosyntheticsbutcautionisadvisedsinceinformationonbetween-laboratoryprecisionofthistestmethodisincomplete.Comparativetestsasdirectedin5.2.1maybeadvisable.Incaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthistestmethodforacceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldfirstconfirmthatthetestswereconductedusingcomparabletestparametersincludingspecimenconditioning,normalstress,seatingperiod,hydraulicgradient,testwatertemperature,etc.,thenconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogenousaspossibleandthatareformedfromalotofthematerialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingtheStudent''st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingisbegun.Ifbiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandsuppliermustagreetointerpretfuturetestresultsinlightoftheknownbias.1.1Thistestmethodcoverstheprocedurefordeterminingtheflowrateperunitwidthwithinthemanufacturedplaneofgeosyntheticsundervaryingnormalcompressivestressesandaconstanthead.Thetestisintendedprimarilyasanindextestbutcanbeusedalsoasaperformancetestwhenthehydraulicgradientsandspecimencontactsurfacesareselectedbytheusertomodelanticipatedfieldconditions.1.2Thistestmethodislimitedtogeosyntheticsthatallowcontinuousin-planeflowpathstooccurparalleltotheintendeddirectionofflow.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesstatedinparenthesesareprovidedforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W59
【国际标准分类号】:59_080_70
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:Aerospaceseries-Lamps,incandescent-Part061:Lamp,code1683-Productstandard;GermanandEnglishversionEN2240-061:2011
【原文标准名称】:航空和航天系列.灯,白炽灯.第061部分:灯,1683号.产品标准;德文版本和英文版本EN2240-061-2011
【标准号】:DINEN2240-061-2011
【标准状态】:现行
【国别】:德国
【发布日期】:2011-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Designations;Dimensions;Electricalengineering;Illuminationengineering;Incandescentlamps;Lamps;Lightingsystems;Productstandards;Spacetransport;Specification(approval)
【摘要】:ThisEuropeanStandardspecifiestherequiredcharacteristicsforlamp,code1683,foraerospaceapplications.ItshouldbeusedtogetherwithEN2756.
【中国标准分类号】:K73
【国际标准分类号】:49_060
【页数】:14P.;A4
【正文语种】: