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Overview of spatial data types

The Geographic Information System (GIS) feature of seekdb includes the following spatial data types:

  • GEOMETRY

  • POINT

  • LINESTRING

  • POLYGON

  • MULTIPOINT

  • MULTILINESTRING

  • MULTIPOLYGON

  • GEOMETRYCOLLECTION

Among these, POINT, LINESTRING, and POLYGON are the three most fundamental types, used to store individual spatial data. They respectively extend into three collection types: MULTIPOINT, MULTILINESTRING, and MULTIPOLYGON, which are used to store collections of spatial data but can only represent collections of their respective specified base types. GEOMETRY is an abstract type that can represent any base type, and GEOMETRYCOLLECTION can be a collection of any GEOMETRY types.