concurrency control
Quick Summary
Concurrency control in computing refers to managing simultaneous access to shared data by multiple processes to ensure data integrity. This is crucial in concurrent programming, where multiple processes execute within a given time frame, and parallel computing, where processes run simultaneously on multiple processors.12
Key challenges in concurrency control include:
* Deadlocks: Occur when processes are stuck waiting for resources held by each other.2
* Race conditions: Happen when the outcome depends on the unpredictable order of process execution, leading to different values being assigned to variables.2
To prevent these issues, process synchronization is used, ensuring one process completes an operation before another proceeds. This is vital for maintaining data accuracy, especially in database management systems where multiple users might access the same data simultaneously.23
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