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PostgreSQL / PostGIS
Georepublic recommends PostgreSQL as database system. PostgreSQL / PostGIS is used by many client and server programs as database backend with support for spatial data.
PostgreSQL, PostGIS & pgRouting
PostgreSQL is a free object-relational database management system (ORDBMS).
PostGIS is a free geographic information system, which extends the object-relational database PostgreSQL to geographical objects and functions. PostGIS implements the OpenGIS Simple Features Specification of the Open Geospatial Consortium.
The module pgRouting module extends a PostgreSQL/PostGIS database with route planning functionality. pgRouting allows the creation of topologies and solving various "shortest path" problems.
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