Search result: GB/T 43156-2023
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Geographic information - Model and storage specifications for vector data
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GB/T 43156-2023
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| Standard ID | GB/T 43156-2023 (GB/T43156-2023) | | Description (Translated English) | Geographic information - Model and storage specifications for vector data | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A75 | | Classification of International Standard | 07.040, | | Word Count Estimation | 41,479 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2023-09-07 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 43156-2023. Geographic information vector data model and storage specifications
ICS 07.040
CCSA75
National Standards of People's Republic of China
Geographic information vector data model and storage specifications
Published on 2023-09-07
Implemented on 2023-09-07
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction IV
1 range 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 UML tags and abbreviations 3
4.1 UML markup 3
4.2 Abbreviations 4
5 Basic data types 4
6 Vector data model 4
6.1 Data composition 4
6.2 Spatial reference system 5
6.3 Feature class 6
6.4 Element 6
6.5 Combination elements 10
6.6 Symbol 10
6.7 Note 11
6.8 Metadata12
7 Vector data storage12
7.1 Data sheet 12
7.2 Spatial reference system table 13
7.3 Feature class table 13
7.4 Element table 13
7.5 Combined element table and its associated table 15
7.6 Symbol table and its associated table 15
7.7 Note Table 16
7.8 Metadata table and its associated tables 16
7.9 Spatial index data table 17
Appendix A (informative) WKT representation example of spatial reference system 18
A.1 1984 World Geodetic Coordinate System (WGS84) 18
A.2.2000 National Geodetic Coordinate System (CGCS2000) 18
A.3 1980 Xi'an Gauss-Krüger projection coordinate system 18
A.4 1954 Beijing Gauss-Krüger projection coordinate system 19
Appendix B (informative) Vector data storage format example 21
B.1 Overview 21
B.2 Table structure definition 22
B.3 Extended definition SQL 27
B.4 Extended Template 31
Reference 35
Preface
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.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying these patents.
This document is proposed by the Ministry of Natural Resources of the People's Republic of China.
This document is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230).
This document was drafted by. Wuhan University, Shenzhen University, National Basic Geographic Information Center, Wuhan University Gio Information Technology Co., Ltd., Beijing
Jiwei Times Software Co., Ltd., Beijing SuperMap Software Co., Ltd.
The main drafters of this document. Gong Jianya, Deng Yuejin, Wang Yandong, Gao Wenxiu, Huang Juntao, Zhang Yuanjie, He Kaikai, He You, and Li Wenlong.
introduction
Geographic information vector data has been widely used in the geospatial field and its related industries. About the conceptual model and model of geographic information vector data
The formula language is described in GB/T 33187.1, GB/T 23708 and other standards. GB/T 17798 specifies the geographical space for text encoding
Inter-data exchange format. However, with the development of geographic information technology and applications, geographic information based on database files and binary encoding of geometric data
The demand for vector data storage, exchange and transmission of management information is becoming increasingly urgent.
This document is based on GB/T 17798 and provides vector data based on the general geographical information vector data expression content and information model.
Representation of the data model; vector data storage specifications are given based on standard, interoperable and self-describing database technology; and based on this
Storage specification, an example of geographic information vector data storage is given.
The vector data model specified in this document includes core data and extended data, and is suitable for storing 2-dimensional and 2.5-dimensional simple elements. different
The application can expand the 3D element data table, dynamic element table or time series element table according to the extension mechanism of this file.
Geographic information vector data model and storage specifications
1 Scope
This document specifies the simple feature model and storage requirements for geographic information vector data.
This document applies to the collection, transmission, storage and exchange of geographic information vector 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 7408 Data elements and exchange format information exchange date and time representation
GB/T 12991.1 Information technology database language SQL Part 1.Framework
GB/T 17798 Geospatial Data Exchange Format
GB/T 23707 Geographic information spatial model
GB/T 23708 Geographic Information Geographic Markup Language (GML)
GB/T 24355 Graphical expression of geographical information
GB/T 33187.1 Geographic information simple feature access Part 1.General architecture
GB/T 35631 XML description specification for map symbols
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
annotation
A mark placed on interpretive material for the purpose of explanation.
Note. Numbers, letters, symbols (3.14) and marks are examples of annotations.
[Source. GB/T 24355-2009, 4.1, with modifications]
3.2
compositefeature
Reference to a collection of features consisting of one or more features (3.4).
3.3
datasetdataset
An identifiable collection of data.
Note. A dataset can be physically a smaller part of a larger dataset through restrictions such as spatial extent or feature type. Theoretically, the data set can
Individual features or feature attributes within small to larger datasets. A hard copy map or chart can be considered a data set.
[Source. GB/T 19710-2005,4.2]
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