For mutual exclusion with a preemptive scheduler, it is necessary to introduce explicit locks, and machinery that makes requesting processes wait when a lock is unavailable. We considered casting our locks as semaphores, but decided that, compared with monitors, they exert too little structuring discipline on concurrent programs." How do semaphores "exert too little structuring discipline" and how is this remedied by monitors? Construct an example to show how the structuring discipline exerted by monitors could be useful.   Please explain in detail with code example for monitors structuring discipline >?

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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.