Introduction to Databases
A database is an organized collection of data that can be easily accessed, managed, and updated. It stores data in a structured way so that it can be efficiently retrieved and manipulated by users or applications.
Why Databases?
- To avoid data duplication
- To maintain consistency and integrity
- To support efficient data retrieval and updates
- To ensure data security and concurrent access
Examples of Databases:
- Oracle
- MySQL
- PostgreSQL
- MongoDB
- SQLite
Real-Life Use Case:
When you log in to your bank's app, all your personal details, account balance, and transaction history are fetched from a database securely and in real time.