Databases Beginner

What is PostgreSQL?

An advanced open-source relational database known for its reliability, feature richness, and standards compliance.

PostgreSQL is a powerful, enterprise-class database supporting advanced features: JSON/JSONB for document storage, full-text search, window functions, CTEs (Common Table Expressions), materialized views, and custom types.

It offers excellent concurrency through MVCC (Multi-Version Concurrency Control), robust indexing options, and extensive extension ecosystem (PostGIS for geospatial, pg_trgm for fuzzy matching). It is the database of choice for many modern applications.

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PostgreSQL Administration & Performance Tuning

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PostgreSQL Security & Access Control

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PostgreSQL for Developers: Queries, Functions & Triggers

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Related Terms

Stored Procedure

A precompiled collection of SQL statements stored in the database that can be executed as a single unit.

Database Connection Pooling

A technique that maintains a cache of database connections for reuse, reducing the overhead of creating new connections.

The process of copying and maintaining database data across multiple servers for redundancy, failover, and read scaling.

Window Function

An SQL function that performs calculations across a set of rows related to the current row without collapsing the result set.

A database operation that inserts a new row if it does not exist, or updates the existing row if it does.

Prepared Statement

A pre-compiled SQL template that uses parameters instead of literal values, preventing SQL injection and improving performance.

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