What is PostgreSQL?
PostgreSQL (often shortened to “Postgres”) is the world’s most advanced open-source, object-relational database. It’s designed for enterprise-level performance and is valued for its robust features and reliability.
PostgreSQL advantages
Reliable and secure. PostgreSQL is highly fault-tolerant, maintaining data durability and maximizing uptime. It supports a strong authentication and authorization model, as well as several encryption methods—including end-to-end data encryption using SSL.
High performing. PostgreSQL stores data in a structured way that allows it to efficiently insert, delete, and modify data. It’s also efficient for lookups and joins. Additionally, PostgreSQL can scale with multiple CPUs in parallel, speeding queries even further.
Compliant. Given their high compliance with the SQL standard, PostgreSQL databases are easy for both building apps and migrating existing ones. They are also ACID compliant, which means that your data is valid even amid hardware, software, or network disruptions.
Highly extensible. PostgreSQL supports a wide range of data types (including advanced and user-created types), multiple coding languages, and the ability to write custom functions. It also has an extension mechanism for adding new functionality.
Important PostgreSQL features
Open source and free
Supports SQL
Supports relationships between tables
Primary key and foreign key
Transactions
Views
Stored procedures/functions
Good support for large amounts of data
Commonly used with Java, Python, Node.js, and web applications
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