标准编号：ISO/IEC 9075-2:2023
中文名称：信息技术 数据库语言SQL 第2部分：基本原则（SQL/基本原则）
英文名称：Information technology — Database languages SQL — Part 2: Foundation (SQL/Foundation)
发布日期：2023-06
标准范围
ThisdocumentdefinesthedatastructuresandbasicoperationsonSQL-data.Itprovidesfunctionalcap- abilitiesforcreating,accessing,maintaining,controlling,andprotectingSQL-data. Thisdocumentspecifiesthesyntaxandsemanticsofadatabaselanguage: — forspecifyingandmodifyingthestructureandtheintegrityconstraintsofSQL-data; — fordeclaringandinvokingoperationsonSQL-dataandcursors; — fordeclaringdatabaselanguageprocedures; — forembeddingSQL-statementsinacompilationunitthatisotherwisewritteninaparticularpro- gramminglanguage(hostlanguage); — forderivinganequivalentcompilationunitinthehostlanguage.Inthatequivalentcompilation unit,eachembeddedSQL-statementhasbeenreplacedbyoneormorestatementsinthehostlan- guage,someofwhichinvokeanSQLexternally-invokedprocedurethat,whenexecuted,hasan effectequivalenttoexecutingtheSQL-statement; — fordirectinvocationofSQL-statements; — tosupportdynamicpreparationandexecutionofSQL-statements. ThisdocumentprovidesavehicleforportabilityofdatadefinitionsandcompilationunitsbetweenSQL- implementations.
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