Optimistic Concurrency Control (OCC) is a method used to manage transactions in a system where multiple processes may access shared data simultaneously. The core idea is to assume that conflicts between transactions are rare.In OCC, transactions proceed without locking data resources ahead of time. They carry out their operations and then validate whether their changes conflict with any other transactions that were committed during their execution. If no conflicts are detected, the transaction is successfully committed. If there is a conflict, the transaction may be rolled back, and it can be retried.This approach improves system performance by allowing greater parallelism, as transactions do not need to wait for each other. However, it can lead to increased overhead if many conflicts occur, requiring more retries.Overall, OCC is valuable for systems where high throughput and quick response times are essential, and it is especially relevant in environments with many small, independent transactions, allowing for efficiency in data handling.