Question

which of the following criteria specifically describes the atomicity property? a.) when a transaction is completed, the database must be in a consistent state. b.) once transaction changes are done and saved, they cannot be lost. c.) all sql requests of a transaction must be completed; if not, the transaction must be aborted. d.) data used in one transaction cannot be used in another transaction until the first transaction is completed.

Answer 1

The atomicity property of a database transaction is correctly described by c.) all SQL requests of a transaction must be completed; if not, the transaction must be aborted. Atomicity ensures that a series of operations within a transaction is treated as a single unit that is either fully completed or fully aborted without partial commitment.

Step-by-step explanation:

The criterion that specifically describes the atomicity property is: c.) all SQL requests of a transaction must be completed; if not, the transaction must be aborted. Atomicity is one of the four key properties of a database transaction, collectively known as ACID (Atomicity, Consistency, Isolation, Durability). In the context of atomicity, a transaction refers to a series of operations that are treated as a single unit of work. The key principle behind atomicity is that either all the operations in a transaction are completed successfully, or none of them are; in other words, a transaction is indivisible. If any part of the transaction fails, the entire transaction must be rolled back, leaving the database in the state it was before the transaction was attempted.