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13. Managing a Spatial Database > 13.8. Spatial Data Queries

Spatial Data Queries

One of the strengths of PostGIS is its ability to store spatial data in a mature, enterprise-level, relational database. Data is made available through standard SQL queries, making it readily available to do analysis with another program without having to import and export the data into proprietary data formats. Another key strength is its ability to use spatially aware PostGIS functions to perform the analysis within the database, still using SQL. The spatial data query examples in this section are the most basic possible. PostGIS boasts of a variety of operators and functions for managing, manipulating, and creating spatial data, including the ability to compute geometric buffers, uni....


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