Description: Transaction rollback is the process of reverting the database to a previous state in case of an error. This mechanism is fundamental in the realm of payment platforms and databases, as it ensures data integrity and consistency. When a transaction occurs, such as a database operation, changes are made to the database that reflect this action. However, if an error occurs, such as a system failure or an unexpected interruption, it is crucial to be able to undo those changes to avoid inconsistencies. Transaction rollback allows restoring the database to its previous state, ensuring that no corrupt or incomplete data remains. This process relies on transaction logs, which store information about each operation performed. Additionally, transaction rollback is a key feature in database management systems (DBMS), where techniques such as concurrency control and failure recovery are implemented. In summary, transaction rollback is an essential component for maintaining reliability and stability in environments where critical data is handled.