POSTGIS
PostGis is a spatial database extension for PostgreSQL.
Postgres is one of the best database management systems in the world. Created by a mathematician and recognized by developers, it combines the best of relational and object databases and is suitable for any project. Flexible, functional, and free, PostgreSQL supports most of the standard SQL functions and provides a huge number of useful tools for developers. With it, your project will be stable, productive, secure for transactions, and infinitely scalable. You can read more about PostgreSQL here.
You need PostGis to add the ability to perform location queries to your database, and thus your project, to work with geographic objects. Working in this case means as serious and deep data processing as you need.
If your PostgreSQL-based project needs to work with geographic objects, you need PostGis. It adds additional types to the database to work with coordinates, spatial indices, raster and vector images, and other tools for building maps and using them later.
Just like PostgreSQL itself, PostGis provides much more features than similar add-ons to the main competitors Oracle and SQL Server. In addition to basic features like geocoding, your developers will have tools to process and analyze vector and raster data to merge, slice, morph, and more. Network topology, spatial re-projection, fine-grained raster processing using algebra maps, and pixel work by area are just some of the features that will be available with PostGIS.
PostGis allows you to process both generated maps and those downloaded from other sources. You can import ESRI shapefiles, raster data from standard formats: GeoTiff, NetCDF, PNG, JPG, and others, as well as vector data in KML, GML, GeoJSON, GeoHash, and WKT. In addition, the extension supports working with 3D objects. In the next version of Postgis 3.2, which is currently in active beta testing, your developers will have access to a faster API to support the GiST build with PostgreSQL 14.
Postgres and Postgis are released under the GNU General Public License. They can be used freely and without charge for any project. Moreover, many other popular editing tools and mapping servers support working with PostGis, which further expands the possibilities of processing geographic object data.
PostGis is one of the useful PostgreSQL extensions that can help your project use location queries. It is a set of libraries, graphical interfaces, and workspaces for working with raster and vector maps. Your PostgreSQL-based project needs PostGis if its list of tasks includes processing geodata for any purpose.