OLTP, or Online Transaction Processing, is a class of software applications that manage transaction-oriented tasks. It is designed to handle a large number of short online transactions, such as inserting, updating, or deleting data in a database. This system ensures that transactions are processed quickly and accurately, making it essential for businesses that require real-time data processing. Typically used in environments like banking, retail, and e-commerce, OLTP systems support day-to-day operations by allowing users to perform transactions efficiently. They rely on a relational database management system (RDBMS) to maintain data integrity and consistency, ensuring that all transactions are completed successfully or rolled back in case of errors.