PostgreSQL

This repository contains the official source distribution of PostgreSQL, an advanced object-relational database management system. It supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, and user-defined types and functions - which is part of why Postgres is often extended with custom data types and functionality rather than treated as a fixed, closed relational engine.

Most users install a prebuilt package for their platform rather than building from this source distribution directly; official documentation covers both building from source and general usage. PostgreSQL fits applications that need a mature, standards-compliant relational database with room to extend it - from typical transactional web-app data to more specialized workloads via extensions.