Please enumerate and briefly describe each of the three steps involved in the physical design. The administration of database recovery may make use of these four backup levels in whatever combination they see fit. What exactly is the function of each successive level of backups?

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Concurrency Control

The simultaneous occurrence of two or more operations is called concurrence and the situation is called concurrency. In concurrency, the function of one operation can affect the function of the other and put data integrity at risk. Hence, management for the control of concurrency is required. The management or controlling system in the Database Management System (DBMS) that coordinates concurrent access is called the concurrency control system.