Tag: Databases

A database is an organized system for storing, managing, and retrieving data efficiently, designed to ensure consistency, durability, and accessibility. At its core, a database structures information—whether numbers, text, or complex objects—into formats that allow fast queries, updates, and analysis. Relational databases, such as PostgreSQL or MySQL, represent data in tables with strict schema rules, enabling powerful SQL-based operations. Non-relational (NoSQL) systems like MongoDB or Cassandra store data more flexibly, favoring scalability and schema freedom for applications with diverse or rapidly changing requirements.