PostgreSQL, often simply referred to as Postgres, is a powerful open-source relational database management system (RDBMS) that emphasizes extensibility and SQL compliance.
Advanced SQL Compliance: Supports a wide array of SQL standards, including complex queries, sub-selects, and common table expressions (CTEs).
Extensibility: Allows users to define custom data types, operators, and functions, making it adaptable for various use cases.
ACID Compliance: Ensures reliable transactions with Atomicity, Consistency, Isolation, and Durability.
Concurrency Support: Utilizes Multiversion Concurrency Control (MVCC) for handling concurrent transactions without read locks.
Rich Data Types: Supports various data types, including JSON, XML, and arrays, catering to modern application needs.
Geospatial Data: With the PostGIS extension, it can handle geographic objects and perform location-based queries.
Community Support: Has a strong and active community, providing a wealth of resources, extensions, and documentation.
Cross-Platform: Runs on various operating systems, including Linux, Windows, and macOS.