DIN EN ISO 19125-2-2006 Geographic information - Simple feature access - Part 2 SQL option (ISO 19125-2 2004) English version EN ISO 19125-2 2006《地理信息 简单特征选取 第2部分 SQL方案(ISO 19125-2.pdf

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1、Mai 2006DEUTSCHE NORM Normenausschuss Bauwesen (NABau) im DINPreisgruppe 20DIN Deutsches Institut fr Normung e.V. Jede Art der Vervielfltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut fr Normung e.V., Berlin, gestattet.ICS 35.240.70!,j:7“9712320www.din.deDDIN EN ISO 19125-2

2、Geoinformation Simple feature access Teil 2: Structured Query Language (SQL) (ISO 19125-2:2004);Englische Fassung EN ISO 19125-2:2006Geographic information Simple feature access Part 2: SQL option (ISO 19125-2:2004);English version EN ISO 19125-2:2006Information gographique Accs aux entits simples P

3、artie 2: Option SQL (ISO 19125-2:2004);Version anglaise EN ISO 19125-2:2006Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlin www.beuth.deGesamtumfang 69 SeitenB55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 DIN EN ISO 19125-2:2006-05 2 Nationales Vorwort Der Text vo

4、n ISO 19125-2:2004 wurde vom Technischen Komitee ISO/TC 211 Geoinformation/Geomatik erarbeitet und als EN ISO 19125-2:2006 vom Technischen Komitee CEN/TC 287 Geoinformation bernommen, dessen Sekretariat vom NEN gehalten wird. Der Text von ISO 19125-2:2004 wurde von CEN als EN ISO 19125-2:2006 ohne n

5、derungen angenommen. Der fr die deutsche Mitarbeit zustndige Arbeitsausschuss im DIN Deutsches Institut fr Normung e. V. ist der als Spiegelausschuss zum CEN/TC 287 und ISO/TC 211 eingesetzte Arbeitsausschuss NA 005-03-03 AA Kartographie und Geoinformation des Normenausschusses Bauwesen (NABau). Das

6、 Prsidium des DIN hat mit seinem Beschluss 1/2004 festgelegt, dass von dem in den Regeln der europischen Normungsarbeit von CEN/CENELEC verankerten Grundsatz, wonach Europische Normen in den drei offiziellen Sprachen Deutsch, Englisch und Franzsisch verffentlicht werden, in begrndeten Ausnahmefllen

7、abgewichen und auf die deutsche Sprachfassung verzichtet werden kann. Die Genehmigung dafr hat die DIN-Geschftsleitung entsprechend ihren in Anlage 1 zu dem DIN-Rundschreiben A 5/2004 festgelegten Kriterien fr die vorliegende Norm auf Antrag des NABau-FB 03 Vermessungswesen; Geoinformation erteilt.

8、Allgemeines DIN EN ISO 19125-2 definiert eine standardisierte und strukturierte Anfragesprache auf der Basis von Objekten, den sogenannten features, die in Datenbanken gespeichert sind. Hierzu wird eine Schnittstelle auf der Basis einer bereits standardisierten Datenbankanfragesprache SQL (Structure

9、d Query Language) definiert - SQL Call-Level Interface (SQL/CLI), die die Speicherung, Wiedergewinnung, Anfragen und Aktualisierungen von Objekten und Objektmengen untersttzt. Die Objekte knnen rumliche und nichtrumliche Attribute besitzen. Rumliche Attribute haben einen geometrischen Bezug mit raum

10、bezogenen Werten (z. B. Flchengre oder -eigenschaften). Die auf einer zweidimensionalen Geometrie basierenden Objekte und Funktionen werden einfache Objekte (en: simple features) genannt und linear interpoliert, d. h. es gibt keine ungleichmig gekrmmten Kurven wie Ellipsen, Klothoiden und Splines. D

11、IN EN ISO 19125-2 baut auf DIN EN ISO 19125-1 auf. Die Objekte werden in Tabellen als Zeile mit geometrischen Werten in einer SQL-Implementierung gespeichert. Die nichtrumlichen Attribute der Objekte werden als Spalten mit Standard SQL-Datentypen gespeichert, deren Datentypen auf den darunter liegen

12、den Konzepten eines erweiterten Geometriedatenmodells fr SQL basieren. Eine Tabelle, in der Objekte zeilenweise gespeichert sind, wird als Objekttabelle wiedergegeben. Solch eine Tabelle beinhaltet ein oder mehrere Geometriespalten. Schemata, die sich aus mehreren Objekttabellen zusammensetzen, werd

13、en in zwei SQL-Implemetierungen unterschieden: Implementierung, basierend auf vordefinierten Datentypen, und SQL mit Geometrietypen. In einer Implementierung, basierend auf vordefinierten Datentypen, wird eine neue Geometrietabelle mit Geometriespalten implementiert und mit einem Foreign Key (eindeu

14、tiger Zugriffsschlssel) referenziert. Dabei wird ein geometrischer Wert in ein oder mehreren Spalten der Geometrietabelle gespeichert. Im zweiten Fall werden die SQL-Erweiterungen in der Geometrietabelle entweder mit numerischen oder binren Standard-SQL-Datentypen gefhrt; beide Flle werden in dieser

15、 Norm beschrieben. B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 DIN EN ISO 19125-2:2006-05 3 Zur Definition der Geometrietypen wird das Standard-SQL um eine Menge von Geometrietypen erweitert. Dabei wird eine Spalte angelegt, deren Werte aus der Menge von definierten Geometri

16、etypen belegt werden kann. Diese Vorgehensweise zur Erweiterung einer bestimmten SQL-Implementierung ist das Ergebnis einer Anwender bezogenen Definition eines Modells. Kommerzielle SQL-Implementierungen mit benutzerdefinierten Typen werden bereits seit Mitte 1997 untersttzt . Nationaler Anhang NA (

17、informativ) Englisch-deutsche Fachwrterliste common architecture gemeinsame Architektur foreign key Fremdschlssel geometric-valued geometrischer Bezug mit raumbezogenen Werten (Flchengre und -eigenschaften) member bodies Mitglieder non-spatial attribute nichtrumliches (flchenhaftes) Attribut spatial

18、 attribute rumliches Attribut technical committee Technisches Komitee vertices Punkte, Brechpunkte, Scheitelpunkte mapped abgebildet splines Kurven (z. B. Hhenlinien) UML-Notation UML-Notationen (Beschreibungen, Aufzeichnungen) SFA Simple Feature Access COM Component Object Model B55EB1B3E14C22109E9

19、18E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 DIN EN ISO 19125-2:2006-05 4 Leerseite B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 19125-2March 2006ICS 35.240.70English VersionGeographic information - Simple feature acc

20、ess - Part 2: SQLoption (ISO 19125-2:2004)Information gographique - Accs aux entits simples -Partie 2: Option SQL (ISO 19125-2:2004)Geoinformation - Simple feature access - Teil 2: StructuredQuery Language (SQL) (ISO 19125-2:2004)This European Standard was approved by CEN on 16 February 2006.CEN mem

21、bers are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on applicatio

22、n to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same

23、 status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovaki

24、a, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for C

25、EN national Members.Ref. No. EN ISO 19125-2:2006: EB55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 ISO 19125-2:2004(E) ISO 2004 All rights reserved iiiContents Page Foreword.3 Introduction 41 Scope5 2 Conformance .63 Normative references .6 4 Terms and definitions.6 5 Symbols an

26、d abbreviated terms7 6 Architecture .8 6.1 Architecture SQL implementation of feature tables based on predefined data types8 6.2 Architecture SQL with Geometry Types implementation of feature tables11 7 Clause component specifications 14 7.1 Components Implementation of feature tables based on prede

27、fined data types .16 7.2 Components SQL with Geometry Types implementation of feature tables.21 Annex A (informative) Comparison of Simple feature access/SQL and SQL/MM Spatial35 Annex B (normative) Conformance tests.36 EN ISO 19125-2:2006 (E) 2B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD -

28、Stand 2007-03 2 Foreword The text of ISO 19125-2:2004 has been prepared by Technical Committee ISO/TC 211 “Geographic information/Geomatics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 19125-2:2006 by Technical Committee CEN/TC 287 “Geographic Inform

29、ation“, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2006, and conflicting national standards shall be withdrawn at the latest by September 20

30、06. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia

31、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 19125-2:2004 has been approved by CEN as EN ISO 19125-2:2006 without any modifications. EN ISO 19125-2:2006 (E) 3B55EB

32、1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 ISO 19125-2:2004(E) ISO 2004 All rights reserved vIntroduction The purpose of this part of ISO 19125 is to define a standard Structured Query Language (SQL) schema that supports storage, retrieval, query and update of feature collection

33、s via the SQL Call-Level Interface (SQL/CLI) (ISO/IEC 9075-3:2003). A feature has both spatial and non-spatial attributes. Spatial attributes are geometry valued, and simple features are based on 2D geometry with linear interpolation between vertices. This part of ISO 19125 is dependent on the commo

34、n architectural components defined in ISO 19125-1. Feature collections are stored as tables with geometry valued columns in a SQL-implementation; each feature is a row in the table. The non-spatial attributes of features are mapped onto columns whose types are drawn from the set of standard SQL data

35、 types. The spatial attributes of features are mapped onto columns whose SQL data types are based on the underlying concept of additional geometric data types for SQL. A table whose rows represent these features is referred to as a feature table. Such a table contains one or more geometry valued col

36、umns. Feature-table schemas are described for two SQL-implementations: implementations based on predefined data types and SQL with Geometry Types. In an implementation based on predefined data types, a geometry-valued column is implemented as a Foreign Key reference into a geometry table. A geometry

37、 value is stored using one or more rows in the geometry table. The geometry table may be implemented using either standard SQL numeric types or SQL binary types; schemas for both are described. The term SQL with Geometry Types is used to refer to a SQL-implementation that has been extended with a se

38、t of Geometry Types. In this environment, a geometry-valued column is implemented as a column whose SQL type is drawn from this set of Geometry Types. The mechanism for extending the type system of an SQL-implementation is through the definition of user defined User Defined Types. Commercial SQL-imp

39、lementations with user defined type support have been available since mid-1997. 4EN ISO 19125-2:2006 (E) B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 1 Scope This part of ISO 19125 specifies an SQL schema that supports storage, retrieval, query and update of simple geospatial

40、 feature collections via the SQL Call Level Interface (SQL/CLI) (ISO/IEC 9075-3:2003). This part of ISO 19125 establishes an architecture for the implementation of feature tables. This part of ISO 19125 defines terms to use within the architecture. This part of ISO 19125 defines a simple feature pro

41、file of ISO 19107. This part of ISO 19125 describes a set of SQL Geometry Types together with SQL functions on those types. The Geometry Types and Functions described in this part of ISO 19125 represent a profile of ISO 13249-3. This part of ISO 19125 does not attempt to standardize and does not dep

42、end upon any part of the mechanism by which Types are added and maintained in the SQL environment including the following: a) the syntax and functionality provided for defining types; b) the syntax and functionality provided for defining SQL functions; c) the physical storage of type instances in th

43、e database; d) specific terminology used to refer to User Defined Types, for example, UDT. This part of ISO 19125 does standardize: names and geometric definitions of the SQL Types for Geometry; names, signatures and geometric definitions of the SQL Functions for Geometry. This part of ISO 19125 des

44、cribes a feature access implementation in SQL based on a profile of ISO 19107. ISO 19107 does not place any requirements on how to define the Geometry Types in the internal schema. ISO 19107 does not place any requirements on when or how or who defines the Geometry Types. In particular, a compliant

45、system may be shipped to the database user with the set of Geometry Types and Functions already built into the SQL-implementation, or with the set of Geometry Types and Functions supplied to the database user as a dynamically loaded extension to the SQL-implementation or in any other manner not mentioned in this part of ISO 19125. 5EN ISO 19125-2:2006 (E) 5B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Sta

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