SANS 19139-2009 Geographic information - Metadata - XML schema implementation《地理信息 元数据 实现XML模式》.pdf

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3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23150-7 SANS 19139:2009 Edition 1 ISO/TS 19139:2007Edition 1 SOUTH AFRICAN NATIONAL STANDARD Geographic information Metadata XML schema im

4、plementation This national standard is the identical implementation of ISO/TS 19139:2007, and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fa

5、x: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS. SANS 19139:2009 Edition 1 ISO/TS 19139:2007 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by N

6、ational Committee SABS SC 71E, Information technology Geographic information, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in October 2009. This standard may only be used and printed by approved su

7、bscription and freemailing clients of the SABS. Reference number ISO/TS 19139:2007(E) ISO 2007TECHNICAL SPECIFICATION ISO/TS 19139 First edition 2007-04-15 Geographic information Metadata XML schema implementation Information gographique Mtadonnes Implmentation de schmas XML SANS 19139:2009This stan

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13、iso.org Published in Switzerland ii ISO 2007 All rights reservedSANS 19139:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO/TS 19139:2007(E) ISO 2007 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Conformance

14、.1 3 Normative references1 4 Terms and definitions .2 5 Symbols and abbreviated terms 3 5.1 Acronyms .3 5.2 Namespace abbreviations 3 5.3 UML model relationships3 5.4 UML model stereotypes4 6 Requirements.5 6.1 Introduction to gmd.5 6.2 Rule-based .5 6.3 Quality 6 6.4 Web implementations .6 6.5 Use

15、of external XML implementations 6 6.6 Multilingual support 6 6.7 Polymorphism7 6.8 Rules for application schema 7 7 Extensions to the UML models in the ISO 19100 series of International Standards8 7.1 Introduction to extensions .8 7.2 Extensions specific to the web environment .8 7.3 Cultural and li

16、nguistic adaptability extensions9 7.4 Extensions for metadata-based transfers of geospatial information 11 8 Encoding rules.17 8.1 Introduction to encoding rules 17 8.2 Default XML Class Type encoding.17 8.3 XML Class Global Element encoding20 8.4 XML Class Property Type encoding20 8.5 Special case

17、encodings22 8.6 XML namespace package encoding40 8.7 XML schema package encoding41 9 Encoding descriptions43 9.1 Introduction to the encoding descriptions .43 9.2 XML namespaces 43 9.3 gmd namespace 44 9.4 gss namespace50 9.5 gts namespace.52 9.6 gsr namespace 53 9.7 gco namespace54 9.8 gmx namespac

18、e.65 9.9 From the conceptual schema to XML file instances72 Annex A (normative) Abstract test suite 74 Annex B (normative) Data dictionary for extensions77 Annex C (informative) Geographic Metadata XML resources 87 Annex D (informative) Implementation examples89 Bibliography111 SANS 19139:2009This s

19、tandard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO/TS 19139:2007(E) iv ISO 2007 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work

20、 of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmen

21、tal, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The ma

22、in task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In

23、 other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group

24、 and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the mem

25、bers of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further t

26、hree years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent right

27、s. ISO/TS 19139 was prepared by Technical Committee ISO/TC 211, Geographic information/Geomatics. SANS 19139:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO/TS 19139:2007(E) ISO 2007 All rights reserved vIntroduction The importance of m

28、etadata describing digital geographic data is explained in detail in the text of ISO 19115. ISO 19115 provides a structure for describing digital geographic data by defining metadata elements and establishing a common set of metadata terminology, definitions and extension procedures. ISO 19115 is ab

29、stract in that it provides a worldwide view of metadata relative to geographic information, but no encoding. Since ISO 19115 does not provide any encoding, the actual implementation of geographic information metadata could vary based on the interpretation of metadata producers. In an attempt to faci

30、litate the standardization of implementations, this comprehensive metadata implementation specification provides a definitive, rule-based encoding for applying ISO 19115. This Technical Specification provides Extensible Markup Language (XML) schemas that are meant to enhance interoperability by prov

31、iding a common specification for describing, validating and exchanging metadata about geographic datasets, dataset series, individual geographic features, feature attributes, feature types, feature properties, etc. ISO 19115 defines general-purpose metadata in the field of geographic information. Mo

32、re detailed metadata for geographic data types and geographic services are defined in other ISO 19100 series standards and user extensions (ISO 19115). This Technical Specification is also intended to define implementation guidelines for general-purpose metadata. Where necessary, interpretations of

33、some other ISO 19100 series standards are incorporated. ISO 19118 describes the requirements for creating encoding rules based on UML schemas and the XML-based encoding rules as well as providing an introduction to XML. This Technical Specification utilizes the encoding rules defined in ISO 19118 an

34、d provides the specific details of their application with regard to deriving XML schema for the UML models in ISO 19115. SANS 19139:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS. This page has been left blank intentionally SANS 19139:2009

35、This standard may only be used and printed by approved subscription and freemailing clients of the SABS.TECHNICAL SPECIFICATION ISO/TS 19139:2007(E) ISO 2007 All rights reserved 1Geographic information Metadata XML schema implementation 1 Scope This Technical Specification defines Geographic MetaDat

36、a XML (gmd) encoding, an XML schema implementation derived from ISO 19115. 2 Conformance Conformance with this Technical Specification shall be checked using all the relevant tests specified in Annex A. The framework, concepts, and methodology for testing, and the criteria to be achieved to claim co

37、nformance are specified in ISO 19105. 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment

38、s) applies. ISO 639-2, Codes for the representation of names of languages Part 2: Alpha-3 code ISO 3166 (all parts), Codes for the representation of names of countries and their subdivisions ISO 8601, Data elements and interchange formats Information interchange Representation of dates and times ISO

39、/IEC 10646, Information technology Universal Multiple-Octet Coded Character Set (UCS) ISO/TS 19103, Geographic information Conceptual schema language ISO 19105, Geographic information Conformance and testing ISO 19107, Geographic information Spatial schema ISO 19108, Geographic information Temporal

40、schema ISO 19109, Geographic information Rules for application schema ISO 19110, Geographic information Methodology for feature cataloguing ISO 19111: 1) , Geographic information Spatial referencing by coordinates ISO 19115:2003, Geographic information Metadata 1) To be published. (Revision of ISO 1

41、9111:2003) SANS 19139:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO/TS 19139:2007(E) 2 ISO 2007 All rights reservedISO 19115:2003/Cor. 1:2006, Geographic information Metadata Technical Corrigendum 1 ISO 19117, Geographic information P

42、ortrayal ISO 19118:2005, Geographic information Encoding ISO 19136: 2) , Geographic information Geography Markup Language (GML) W3C XMLName, Namespaces in XML. W3C Recommendation (14 January 1999) W3C XMLSchema-1, XML Schema Part 1: Structures. W3C Recommendation (2 May 2001) W3C XMLSchema-2, XML Sc

43、hema Part 2: Datatypes. W3C Recommendation (2 May 2001) W3C XML, Extensible Markup Language (XML) 1.0 (Second Edition), W3C Recommendation (6 October 2000) W3C XLink, XML Linking Language (XLink) Version 1.0. W3C Recommendation (27 June 2001) 4 Terms and definitions For the purposes of this Technica

44、l Specification, the following terms and definitions apply. 4.1 namespace collection of names, identified by a URI reference, that are used in XML documents as element names and attribute names W3C XML 4.2 package general purpose mechanism for organizing elements into groups ISO/TS 19103, definition

45、 4.2.22 EXAMPLE Identification information; Metadata entity set information; Constraint information. 4.3 realization semantic relationship between classifiers, wherein one classifier specifies a contract that another classifier guarantees to carry out Booch 1999 4.4 polymorphism characteristic of be

46、ing able to assign a different meaning or usage to something in different contexts specifically, to allow an entity such as a variable, a function, or an object to have more than one form NOTE There are several different kinds of polymorphism. http:/ 2) To be published. SANS 19139:2009This standard

47、may only be used and printed by approved subscription and freemailing clients of the SABS.ISO/TS 19139:2007(E) ISO 2007 All rights reserved 35 Symbols and abbreviated terms 5.1 Acronyms UML Unified Modelling Language XCT XML Class Type XCPT XML Class Property Type XCGE XML Class Global Element XML E

48、xtensible Markup Language XPath XML Path Language XSD XML Schema Definition XSL Extensible Style Language XSLT XSL Transformation 5.2 Namespace abbreviations In the lists below, the item on the left describes the common namespace prefix used to describe the elements in the namespace. The second item

49、 is an English description of the namespace prefix, and the item in parenthesis is the URI of the actual namespace. These URIs do not correspond necessarily to an effective location of the schemas. This first list corresponds to the namespaces defined by this Technical Specification. gco Geographic Common extensible markup language (http:/www.isotc211.org/2005/gco) gmd Geographic MetaData extensible markup language (http:/www.isotc211.org/2005/g