A database is an organized collection of structured data stored electronically, typically managed by a Database Management System (DBMS). It allows for efficient storage, retrieval, and manipulation of data. Databases are used in computing to:
1. **Store Data**: They keep data in a structured format, such as tables, which makes it easier to access and manage.
2. **Retrieve Information**: They allow users and applications to query the data quickly and efficiently.
3. **Update Records**: They enable modification of data, ensuring that changes are reflected across the system.
4. **Maintain Integrity**: They enforce rules to maintain the accuracy and consistency of the data.
5. **Support Transactions**: They handle multiple operations as a single unit to ensure data integrity during complex processes.
Databases are essential in various applications, from simple data storage needs to complex data analysis and transaction processing in industries like finance, healthcare, and e-commerce.