_____ means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.
A) Serializability
B) Atomicity
C) Isolation
D) Time stamping

Question

_____ means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.
A) Serializability 
B) Atomicity
C) Isolation
D) Time stamping

Quizplus · Accepted Answer

Isolation is a property of database transactions that ensures that concurrent execution of transactions does not result in a state that violates the consistency of the database. It means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed. Serializability ensures that transactions appear to execute serially, while atomicity ensures that a transaction is either performed in its entirety or not at all. Time stamping is a technique used for concurrency control to manage the execution order of transactions.

_____ Means That Data Used During the Execution of a Transaction