Concurrency Control is a technique used in database management systems to ensure that multiple transactions can occur simultaneously without leading to inconsistencies. It helps maintain the integrity of the database by coordinating access to shared resources, preventing conflicts that could arise when two or more transactions try to modify the same data at the same time. There are various methods for implementing Concurrency Control, including locking, where a transaction must wait for others to finish before proceeding, and optimistic concurrency control, which allows transactions to execute without restrictions but checks for conflicts before committing changes. These methods help ensure that the database remains accurate and reliable.