Database

What happens if a validation of a transaction fails?

Select one: a. The transaction gets rolled back. b. The transaction fails and enters into a deadlock. c. The transaction gets postponed. d. The transaction gets earmarked as possibly problematic but completes anyway. e. The database gets corrupted and all data is lost.

What is a transaction identifier?

Select one: a. It is the unique identifier of the transaction that performed the read operation. b. It is the unique identifier of the transaction that performed the write operation. c. It is the unique identifier of the transaction that performed the delete operation. d. It is the unique identifier of the transaction that performed the commit operation. e. It is the unique identifier of the transaction that performed the stop operation.