PostGIS is an open source, freely available, and fairly OGC compliant spatial database extender for the PostgreSQL Database Management System (DBMS). It is designed to add support for geographic objects to the PostgreSQL object-relational DBMS, making it a powerful tool for location-aware applications. PostGIS extends the capabilities of PostgreSQL by adding support for geographic objects, allowing users to store, query, and manipulate geospatial data. It includes a suite of spatial functions such as distance, area, union, intersection, and specialty geometry data types, which are essential for geospatial analysis and applications. PostGIS also provides the ability to index spatial columns for faster searches and supports the SQL/MM spatial standard, which is a standard for the manipulation of spatial data within a relational database. It is widely used in various fields such as urban planning, environmental science, and GPS tracking, where the ability to work with geographic data is crucial. read more >>

PostGIS is an open source, freely available, and fairly OGC compliant spatial database extender for the PostgreSQL Database Management System. In a nutshell it adds spatial functions such as distance, area, union, intersection, and specialty geometry data types to the database.read more >>