GB/T 19710.1-2023Geographic information - Metadata - Part 1: Fundamentals (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document is Part 1 of GB/T 19710 "Geographical Information Metadata": GB/T 19710 has published the following parts:

---Part 1: Basics;

---Part 2: Imagery and Grid Data Extensions:

This document replaces GB/T 19710-2005 "Geographical Information Metadata": Compared with GB/T 19710-2005, except for structural adjustments and in addition to editorial changes, the main technical changes are as follows:

---Added "service metadata information" (see 6.5:14, Table B:14, E:5:8);

---Added metadata describing discovery services and non-service resources (see F:2, F:3);

---Deleted the concept of "core metadata" (see 6.5 of the:2005 version);

---Deleted the relevant content of "data quality information" (see A:2:4 and B:2:4 of the:2005 version);

---Deleted the "abbreviation" of the metadata element and the "field code" of the code (see Appendix B of the:2005 version):

This document is modified to adopt ISO 19115-1:2014 "Geographical Information Metadata Part 1: Basics":

Compared with ISO 19115-1:2014, this document has made the following structural adjustments:

---Chapter 2 ~ Chapter 4 correspond to Chapter 3 ~ Chapter 5 of ISO 19115-1:2014;

---Chapter 5 corresponds to Chapter 2 in ISO 19115-1:2014;

---Deleted 6:7 of ISO 19115-1:2014; 6:7~6:10 of this document correspond to 6:8~6:11 of ISO 19115-1:2014;

---Deleted B:3:11 and B:3:14 of ISO 19115-1:2014; B:3:11~B:3:12 of this document correspond to ISO 19115-1:2014 B:3:12~B:3:13; B:3:13~B:3:31 of this document correspond to B:3:15~B:3:33 of ISO 19115-1:2014:

The technical differences between this document and ISO 19115-1:2014 and their reasons are as follows:

---Added relevant content of CI_Telephone type code > (see B:3:6);

---Changed the DS_Plan Type Code > (see B:3:10) to suit the actual situation in my country;

---Changed the MD_safety restriction classification code > (see B:3:12) to comply with GB/T 7156-2003 and national regulations relevant regulations;

---Added relevant content of MD_maintenance frequency code > (see B:3:19);

---Deleted MD_topic type code > line 11 "Intelligent Military" (see B:3:28);

---Changed Figure C:1 to eliminate ambiguity:

The following editorial changes have been made to this document:

---Incorporated the amendments to ISO 19115-1:2014/Amd:1:2018 and ISO 19115-1:2014/Amd:2:2020, involving the outer margin of the clause is marked with a vertical double line (||);

---Changed the normative reference documents and moved some documents to reference documents, including: ISO 19108, ISO 19107, ISO 19111, ISO 4217:2015;

---Replaced ISO 19101-1:2002 with the informative reference GB/T 33188.1-2016 (see 3.5);

---Deleted the multilingual and related parts of ISO 19115-1:2014, including: deleted the normative reference document ISO 639 (so There are some), 6:7, B:3:11, B:3:14, rows 64 and 65 of Table B:3, row 185 of Table B:9, Table B:18, Table B:18:1,

Table B:18:2 and some other associated elements, multilingual examples in Appendix D, and Appendix G; replace "(for example:

'C/Encoding is not defined and UFT-8 is not used?')" in row 18 of Table B:2 is changed to "(For example: 'C/ is not used in row 38 of Table B:2 resource, rather than the metadata of the dataset?')"; deleted "The version of this standard is in English and should be translated into National language or entity developing special standards", "Examples in D:1 are expressed in English: However, countries permitting the execution of this document

---Changed some figures to ensure consistency with the changed code table: A specialized class of DS_OtherAggregate has been added in Figure 1 DS_StereoMate, and added "DS_StereoMate (DS_ stereo image pair) is DS_" in the text description:

Specialized class of OtherAggregate(DS_Other Aggregation): ";Changed the DS_InitiativeTypeCode in Figure 7, which is consistent with B:3:10 Consistent; changed the MD_ClassificationCode of Figure 8 to be consistent with B:3:12; changed the MD_Mainte- of Figure 10

---Changed some examples to suit my country's national conditions: deleted "Dublin Core, FGDC" and changed "ISO Standard" to "National Standard" (see definition in row 23 of Table B:2); change "NOAAlevel1B" to "Ziyu-3 Satellite 1C Level" (see Table B:3 Line 55 definition); change "Laconte County, Laconte City, Laconte River and Laconte Mountain" to "Huangshan City, Huangshan District and Huangshan", "When searching, the user can limit the search to only rivers are useful" changed to "When searching, the user can limit the search to Restricted to only mountains are useful" (see table B:3:1 row 72 definition); change "EPSG::4326" to "CGCS2000" (see

Table B:8 row 180 definition); change "2019:71" to "2000:0" (see table B:8 row 180b definition); change "by

ISO 4217 stipulates" is changed to "yuan or ten thousand yuan" (see definition in line 269 of Table B:11:5); "'DCW' is a 'global digital location' "The alias of the map" was changed to "'(land) Sandiao' is the alias of the 'Third National Land Survey'" (see line 363 of Table B:16 for the definition Delete the expression "country" in the second and third paragraphs of C:5; change D:2 Example 1 to "1:1 million national basic geographical information Data"; change "Sydney Harbor, Golden Gate Bridge" in E:5:4 to "Ningbo Zhoushan Port, Wuhan Yangtze River Bridge";

---Corrected printing errors: deleted the duplicate content in the definition in line 276 of Table B:12; changed the definition in line 278 of Table B:12:1 "Geodata" changed to "Resources" to remain consistent with line 277:

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

Introduction

In recent years, advances in computer software and hardware in data management and analysis, especially the integration with geographically referenced observation activities, have enabled Our digital information solutions are widely used around the world: Increasingly, students outside the fields of geographic information science and information technology Branch, is producing, enhancing and updating digital geographic information: Given the increasing number, complexity, and diversity of geographic information resources, providing understanding Approaches to various aspects of these resources are becoming increasingly important:

A digital geographical data set is a simulation and description of the real world, used for computer analysis and graphic display of information: The model is a it is an abstract concept that requires approximation, simplification and omission of certain aspects, and is always only one of many possible "perspectives": To ensure that the data is not Misuse, settings and limitations affecting data production must be fully explained: Usually, most users of data are not data producers: Elements Data enables data producers to fully describe the resource so that users can understand its settings and limitations and evaluate the resource's suitability for their application needs:

sex: Providing appropriate documentation enables users unfamiliar with the data to better understand and use the data correctly: High-quality documentation will also Provide data producers with useful knowledge of the products they hold and enable them to better manage the production, storage, update and reuse of data:

GB/T 19710 aims to provide producers with resources such as description of data sets, data set series, services, documents, activities, software, human resources or institutions:

information so that users can understand the settings and limitations and evaluate the suitability of the resource for its intended use: It is planned to consist of three parts:

---Part 1: Basics: Define the schema required to describe geographic information and services through metadata:

---Part 2: Imagery and Grid Data Extensions: Extend the acquisition and processing of geographic information (including imagery) by defining what is needed to describe Scheme, Extension Part 1:

---Part 3: XML schema implementation of basic concepts: Set of definitions Part 1, Part 2 and ISO/T S19139 concepts into XML implementation, providing technical specifications for metadata XML schema implementation:

This document is intended for use by information systems analysts, programmers, information systems developers, and others to clarify Standardize the basic principles and requirements for describing information resources: When the resource provider executes this file, it will:

---Enable information resource providers to effectively and completely describe the characteristics of their resources;

---Contributes to the organization and management of information resource metadata;

---Enable users to accurately understand the basic characteristics of information resources, so that they can effectively utilize information resources;

---Contributes to the discovery, access, retrieval and reuse of resources;

---Enable users to determine whether information resources are useful to them:

This document is a revision of GB/T 19710-2005, completely independent from the previous version, with a new name and date: with previous version Compared to this one, its UML packages, classes and elements have different identifiers: The UML of GB/T 19710-2005 is still retained in ISO/TC211 Past instances of metadata can continue to reference/use previous versions:

The purpose of metadata is to describe resources: Save this description information in the data and make it difficult to change: It can be used to both interpret data and Used to perform searches for discovery data: A large amount of old data complies with the requirements of GB/T 19710-2005, while new data (still in production) Comply with national or regional special standards of GB/T 19710-2005: The data will remain as currently defined: In new product regulations New data produced under the scope will be based on this document: As this document is released, a hybrid data environment will exist: According to this article the data discovery support system and data interpretation support system developed by the software must be able to identify and interpret the data formed in accordance with GB/T 19710-2005:

Metadata to discover and interpret all data in hybrid environments: Use separate identifiers for revised elements and revision metadata standards Helps to do this:

In order to ensure backward compatibility and facilitate metadata instance conversion, this document is revised:

---No new required elements have been added;

---If you need to change the definition of a metadata element, delete the element and replace it with a new metadata element; the name of the metadata element not reused for other concepts;

---Expanded the definition of some metadata elements;

---Metadata elements can be reused when the data type of the metadata element changes but the name and definition remain the same;

---The order of retained attributes is the same as that in the superseded standard;

---Keep UML refactoring to a minimum:

Geographic Information Metadata Part 1: Basics

1 Scope

This document specifies the schema required to use metadata to describe geographic information and its services, and provides information on digital geographic data and services:

Information related to identification, coverage, quality, spatial and temporal patterns, content, spatial references, representation, distribution and other characteristics:

This document defines:

---Required and conditionally required metadata subsets, metadata entities and metadata elements;

---For most metadata applications (data discovery, determining data suitability, data access, data transfer, and digital data and services service application) the minimum set of metadata required to provide the service;

---Optional metadata elements to provide a more fully standardized description of the resource when needed;

---Methods to extend metadata to meet special needs:

This document applies to:

---Cataloging of various resources, data exchange and comprehensive description of data sets and services;

---Geo services, geographic datasets, dataset series, and individual geographic features and feature properties:

Although this document applies to digital forms of data and services, its principles can be extended to many other types of resources, such as maps, charts, documents, etc:

This document as well as non-geographic data: Some conditionally required metadata elements may not apply to these other forms of data:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations for undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 21336.1 Geographic information data quality Part 1: General requirements (GB/T 21336.1-2023, ISO 19157-1:

2023,MOD)

GB/T 30171-2013 Geographic Information Specific Standard (ISO 19106:2004, MOD) Note: There is no technical difference between the quoted content of GB/T 30171-2013 and the quoted content of ISO 19106:2004:

GB/T 33185-2016 Spatial reference of geographical information based on geographical identifiers (ISO 19112:2003, IDT) GB/T 35647-2017 Geographic Information Concept Pattern Language (ISO 19103:2015, IDT) Note: GB/T 7408-2005 Data element and exchange format information exchange date and time representation (ISO 8601:2000, IDT) ma) logging) Note: GB/T 19710.2-2016 Geographic information metadata Part 2: Image and grid data extension (ISO 19115-2:2009, IDT)