A database is a structured collection of organized data that is stored electronically in a computer system. It is designed to efficiently manage, store, retrieve, and update information. Databases are integral to various applications and systems, providing a reliable way to store and access data.

Key aspects of a database include:

1. Structure: Databases have a defined structure that organizes data into tables, which consist of rows and columns. This structure allows for efficient storage and retrieval of information.