Question

Serializability means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed. group of answer choices

O true
O false

Answer 1

Serializability is a concept in database management systems that ensures the correctness and consistency of concurrent transactions. It prevents concurrent transactions from accessing or modifying data until a previous transaction has completed.

Step-by-step explanation:

Serializability is a concept in database management systems that ensures the correctness and consistency of concurrent transactions. It states that the execution of multiple transactions should yield the same results as if they were executed in a serial manner, one after another.

This means that the data used during the execution of a transaction cannot be accessed or modified by another transaction until the first one has completed. This helps maintain data integrity and prevent inconsistencies that can arise from concurrent access to the same data.

For example, suppose two transactions T1 and T2 both attempt to update the same bank account balance. If serializability is enforced, T2 will have to wait until T1 has completed its update before accessing the account balance. This ensures that the final balance reflects the correct sequence of updates from both transactions.