Concurrent access to shared data may result inGroup of answer choicesdata consistencydata inconsistencynone of thesedata insecurity
Question
Concurrent access to shared data may result in
- Group of answer choices
- data consistency
- data inconsistency
- none of these
- data insecurity
Solution
Concurrent access to shared data may result in data inconsistency.
Here's why:
-
When multiple processes access the same data concurrently, there's a chance they might try to modify it at the same time.
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If Process A reads data, then Process B reads the same data and modifies it, Process A may be working with outdated information if it tries to modify the data later.
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This can lead to a state where different processes have different views of the data, or where the final state of the data depends on the order of operations, which is generally not predictable in a concurrent system.
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This situation is known as a race condition and it's one of the main sources of data inconsistency in concurrent systems.
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Therefore, mechanisms like locks, semaphores, or transactions are used in concurrent programming and databases to prevent these issues and ensure data consistency.
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