GB/T 20258.4-2007
AbolishedData dictionary for fundamental geographic information features - Part 4：data dictionary for fundamental geographic information features of 1:250 000 1:500 000 1:1 000 000 scale
基础地理信息要素数据字典 第4部分：1:250 000 1:500 000 1:1 000 000基础地理信息要素数据字典
Application Summary AI generated
This standard defines a structured data dictionary for fundamental geographic information features at scales of 1:250,000, 1:500,000, and 1:1,000,000. It is applied in national mapping and geographic information systems (GIS) to ensure consistent classification, coding, and attribute definitions for medium- to small-scale topographic data. The standard supports data exchange, database construction, and interoperability among surveying, mapping, and spatial data management agencies.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.