PostgreSQL

PostgreSQL is a powerful, open-source object-relational database management system (ORDBMS) known for reliability, data integrity, and advanced SQL support. It is widely used in enterprise applications, web systems, analytics, and environments requiring high performance and scalability. PostgreSQL offers extensive extensibility, strong community support, and compliance with modern database standards.

Features of PostgreSQL:

• ACID-compliant with strong data integrity and reliability.
• Supports advanced SQL features like window functions, CTEs, and full-text search.
• JSON/JSONB support for hybrid relational and NoSQL workloads.
• Extensible architecture allowing custom data types, functions, and extensions.
• Multi-Version Concurrency Control (MVCC) for high-performance concurrent queries.

Usage Instruction

To check the installed PostgreSQL version, run: 
$sudo su
$/opt/postgresql-19/bin/psql --version

Disclaimer: PostgreSQL is released under the PostgreSQL License, a permissive open-source license. It is provided “as is,” without any warranty, express or implied. Users should ensure proper configuration, security hardening, and compliance with organizational or industry standards before using PostgreSQL in production.