The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0 = 0,S1 = 1 and S2 = 1. Process P0: while (true) {   wait (S0);  print '1'; release(S1); release(S2); } Process P1: wait (S2); release (S0); Process P2: wait(S2); release(S0); How many times will process P0 print '1'?

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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.