Database

Databases are the structured, electronic backbone for all applications, managing data storage, retrieval, and updates via query languages like SQL and NoSQL.

A database is an organized, electronic collection of structured or unstructured data, managed by a Database Management System (DBMS) to ensure integrity and efficient access. These systems are foundational: they handle all CRUD operations (Create, Read, Update, Delete) for applications ranging from financial ledgers to social media feeds. Key types include Relational Databases (RDBMS), which use structured tables and SQL (e.g., PostgreSQL, Oracle), and NoSQL databases, which offer flexible schemas for massive scale and speed (e.g., MongoDB, Cassandra). Choosing the right architecture (relational for transactional integrity or NoSQL for high availability) is the critical first step in any data-driven project.

https://www.tadabase.io/what-is-a-database-complete-overview-examples