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GB/T 43156-2023Geographic information—Model and storage specifications for vector data (English PDF)

地理信息矢量数据模型与存储规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 7, 2023

Implementation date

September 7, 2023

Scope

GB/T 43156-2023 is the English-translated version of 地理信息矢量数据模型与存储规范.

This document specifies the simple feature model for geographic vector data and the requirements for storing it. The document applies to the collection, transmission, storage and exchange of geographic information vector data.

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Document preview — GB/T 43156-2023

National Standard of the People's Republic of China

ICS: 07.040
Classification: A 75

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1 Scope
2 Normative reference documents
3 Terms and Definitions
4 UML tags and abbreviations
4.1 UML markup
4.2 Abbreviations
5 Basic data types
6 Vector data model
6.1 Data composition
6.2 Spatial reference system
6.3 Feature class
6.4 Element
6.5 Combination elements
6.6 Symbol
6.7 Note
6.8 Metadata
7 Vector data storage
7.1 Data sheet
7.2 Spatial reference system table
7.3 Feature class table
7.4 Element table
7.5 Combined element table and its associated table
7.6 Symbol table and its associated table
7.7 Note Table
7.8 Metadata table and its associated tables
7.9 Spatial index data table
Appendix A (informative) WKT representation example of spatial reference system
A.1 1984 World Geodetic Coordinate System (WGS84)
A.2.2000 National Geodetic Coordinate System (CGCS2000)
A.3 1980 Xi'an Gauss-Krüger projection coordinate system
A.4 1954 Beijing Gauss-Krüger projection coordinate system
Appendix B (informative) Vector data storage format example
B.1 Overview
B.2 Table structure definition
B.3 Extended definition SQL
B.4 Extended Template
Reference

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.

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 Composite feature

Reference to a collection of features consisting of one or more features (3.4).

3.3 Dataset

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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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 17943-2025|GB/T 18578-2025|GB/T 21740-2025|GB/T 28585-2025|GB/T 45522-2025|GB/T 45631-2025

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