PostgreSQL is an open-source and completely free object-relational database system with powerful features and benefits. Taking advantage of the security, storability, and scalability features of the SQL language, PostgreSQL is also used as a database manager in many areas.

PostgreSQL helps developers and project managers manage and store the data they use while developing software, big or small. Because it is free and open-source, PostgreSQL is fully adaptable, unlike many database systems. Since PostgreSQL is in SQL standards, it aims to offer a stable architecture and high performance.

Advantages:
• Open source: Among the open-source database management systems, only PostgreSQL offers enterprise-class open source support. In addition, since it is completely open-source, users can solve their problems and report bugs with the help of large communities.
• Community-based: PostgreSQL is not affiliated with any company and is open to all developers. Anyone who needs it can customize PostgreSQL to meet their needs and use it. The fact that many users around the world use PostgreSQL also provides convenience for the modules and other tools you need. And completely free of charge…
• Functions: It can be used in almost all server environments thanks to the SQL functions called Store Procedure. As withPL/SQL and Oracle, it can be used with many languages thanks to its support for PL/pgSQL, PL/Python, PL/Perl, C/C++, and PL/R.
• ACID and Transaction support: PostgreSQL supports ACID (Atomicity, Consistency, Isolation, Durability).
• Different indexing techniques: PostgreSQL does not only includes B+ train index but also GIN (Generalized InvertedIndex) and GiST (Generalized Search Tree) etc. It also offers indexing techniques.
• Flexible full-text search feature: The full-text search feature can be used when searching for strings that execute vector operation and string search.
• Replication variants: Supports various replication methods such as PostgreSQL, Streaming Replication, Slony-I, and cascading.
• Diversified extension functions: PostgreSQL supports different types of techniques for geodata storage such as PostGIS, Key-Value Store, and DBLink.