QuestionJuly 17, 2025

How does a database system protect data when concurrent transactions occur? Through the reversal of a whole or partial transaction due to a failure By ensuring authorized users only access permissible data Documenting any lost transactions by always recording results Preventing multiple transactions with the same data at the same time

How does a database system protect data when concurrent transactions occur? Through the reversal of a whole or partial transaction due to a failure By ensuring authorized users only access permissible data Documenting any lost transactions by always recording results Preventing multiple transactions with the same data at the same time
How does a database system protect data when
concurrent transactions occur?
Through the reversal of a whole or partial transaction due to a
failure
By ensuring authorized users only access permissible data
Documenting any lost transactions by always recording results
Preventing multiple transactions with the same data at the
same time

Solution
4.5(318 votes)

Answer

Preventing multiple transactions with the same data at the same time Explanation 1. Implementing Isolation Database systems use isolation to ensure that transactions are executed independently without interference, preventing multiple transactions from accessing the same data simultaneously. 2. Utilizing Locking Mechanisms Locking mechanisms like read and write locks prevent concurrent access to data by different transactions, ensuring data integrity. 3. Applying ACID Properties The ACID (Atomicity, Consistency, Isolation, Durability) properties ensure that transactions are processed reliably, with isolation specifically addressing concurrency issues.

Explanation

1. Implementing Isolation<br /> Database systems use isolation to ensure that transactions are executed independently without interference, preventing multiple transactions from accessing the same data simultaneously.<br /><br />2. Utilizing Locking Mechanisms<br /> Locking mechanisms like read and write locks prevent concurrent access to data by different transactions, ensuring data integrity.<br /><br />3. Applying ACID Properties<br /> The ACID (Atomicity, Consistency, Isolation, Durability) properties ensure that transactions are processed reliably, with isolation specifically addressing concurrency issues.
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