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Key features of Postgresql

PostgreSQL is a highly advanced, open-source relational database management system that emphasizes extensibility and SQL compliance. It comes with a long list of developer-friendly features that you should know about as a beginner. Let's dive into discussing the key features of PostgreSQL.

1. ACID Compliance:​

PostgreSQL is fully ACID-compliant (Atomicity, Consistency, Isolation, Durability). It ensures data integrity and consistency even in the event of system crashes or power failures.

2. Extensibility:​

PostgreSQL is highly extensible. It allows you to define your own data types, operators, and functions. You can even create custom plugins to modify PostgreSQL's behavior.

3. MVCC (Multi-Version Concurrency Control):​

PostgreSQL's MVCC feature allows for high concurrency and performance by creating a "snapshot" of data that allows users to view the database as it was at a certain point in time.

4. Full-Text Search:​

PostgreSQL supports full-text search, which means you can search for text data in multiple languages without needing external search engines.

5. Security:​

PostgreSQL has robust security features that include strong access-control mechanisms, views, and granular permissions. It also provides SSL to provide encrypted client-server communication.

6. Procedural Languages:​

PostgreSQL supports various procedural languages, like PL/pgSQL (similar to Oracle's PL/SQL), JavaScript, Python, Perl, etc., which you can use to write stored procedures and triggers.

7. Indexing:​

PostgreSQL provides several methods for indexing, including B-tree, hash, GiST, SP-GiST, GIN, and BRIN. This allows for flexible and performance-optimized indexing based on your specific use-case.

8. Replication and Partitioning:​

PostgreSQL supports master-slave and multi-master replication methods. This helps improve read performance and make the system more fault-tolerant. It also supports table partitioning, which helps improve performance and management of large tables.

9. Internationalization:​

PostgreSQL supports international characters and locales. This means that you can store text in any language and sort it based on locale-specific rules.

10. JSON Support:​

PostgreSQL supports JSON and JSONB data types. This allows you to combine the flexibility of JSON with the robustness of a relational database.

These are just some of the key features of PostgreSQL. As you dive deeper into PostgreSQL, you'll discover many more powerful features and tools that make it a versatile and reliable choice for managing and interacting with your data.