【英文标准名称】:EvaluatingGrindingMaterialsUsedforSurfacePreparationinSpectrochemicalAnalysis
【原文标准名称】:用光谱化学分析法评定表面处理用研磨材料
【标准号】:ASTME1257-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:评定;光谱分析;说明书;磨料;表面预处理
【英文主题词】:instructions;spectralanalysis;abrasives;pre-treatmentofsurfaces;evaluations
【摘要】:
【中国标准分类号】:J43
【国际标准分类号】:25_100_70
【页数】:5P;A4
【正文语种】:英语


【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