【英文标准名称】:Geographicinformation-Simplefeatureaccess-Part2:SQLoption
【原文标准名称】:地理信息.简单特征选取.第2部分:SQL方案
【标准号】:ISO19125-2-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-08
【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/TC211
【标准类型】:()
【标准水平】:()
【中文主题词】:模型;结构化询问语言;地理学;大地测量学;地理信息;数据处理;数据描述;坐标系(地理);数据传送;信息处理;特征块;图;几何;定义;数据表示
【英文主题词】:Construction;Coordinates(geography);Datadescription;Dataprocessing;Datarepresentation;Datatransfer;Definitions;Englishlanguage;Featureblocks;Geodesy;Geographicinformation;Geography;Geometry;Informationprocessing;Models;Schemes;SQL;StructuredQueryLanguage
【摘要】:ThispartofISO19125specifiesanSQLschemathatsupportsstorage,retrieval,queryandupdateofsimplegeospatialfeaturecollectionsviatheSQLCallLevelInterface(SQL/CLI)(ISO/IEC9075-3:2003).ThispartofISO19125establishesanarchitecturefortheimplementationoffeaturetables.ThispartofISO19125definestermstousewithinthearchitecture.ThispartofISO19125definesasimplefeatureprofileofISO19107.ThispartofISO19125describesasetofSQLGeometryTypestogetherwithSQLfunctionsonthosetypes.TheGeometryTypesandFunctionsdescribedinthispartofISO19125representaprofileofISO13249-3.ThispartofISO19125doesnotattempttostandardizeanddoesnotdependuponanypartofthemechanismbywhichTypesareaddedandmaintainedintheSQLenvironmentincludingthefollowing:a)thesyntaxandfunctionalityprovidedfordefiningtypes;b)thesyntaxandfunctionalityprovidedfordefiningSQLfunctions;c)thephysicalstorageoftypeinstancesinthedatabase;d)specificterminologyusedtorefertoUserDefinedTypes,forexample,UDT.ThispartofISO19125doesstandardize:?namesandgeometricdefinitionsoftheSQLTypesforGeometry;?names,signaturesandgeometricdefinitionsoftheSQLFunctionsforGeometry.ThispartofISO19125describesafeatureaccessimplementationinSQLbasedonaprofileofISO19107.ISO19107doesnotplaceanyrequirementsonhowtodefinetheGeometryTypesintheinternalschema.ISO19107doesnotplaceanyrequirementsonwhenorhoworwhodefinestheGeometryTypes.Inparticular,acompliantsystemmaybeshippedtothedatabaseuserwiththesetofGeometryTypesandFunctionsalreadybuiltintotheSQL-implementation,orwiththesetofGeometryTypesandFunctionssuppliedtothedatabaseuserasadynamicallyloadedextensiontotheSQL-implementationorinanyothermannernotmentionedinthispartofISO19125.
【中国标准分类号】:A76
【国际标准分类号】:35_240_70
【页数】:61P;A4
【正文语种】:英语