Question

Choose the right statement

Select one:
a. SQL allows us to group several statements into a single transaction.
b. All of the others
c. Transaction is a collection of one or more operations on the database that must be executed atomically. That is, either all operations are performed or none of them is done.
d. In SQL, each statement is a transaction by itself.

Answer 1

The right statement in the context of SQL transactions is "c. Transaction is a collection of one or more operations on the database that must be executed atomically." SQL also allows the grouping of several statements into a transaction, and while each statement can be treated as a transaction, multiple statements can be grouped explicitly as well.

Step-by-step explanation:

The right statement to choose in the context of SQL transactions is: c. Transaction is a collection of one or more operations on the database that must be executed atomically. That is, either all operations are performed or none of them is done. This is the definition of a transaction in the context of databases. A transaction ensures the integrity of data by making sure that either all of a set of operations are completed successfully, or if an error occurs, none of them are applied.

a. SQL allows us to group several statements into a single transaction is also a correct statement. Transactions can include multiple SQL statements that are executed together.

The statement d. In SQL, each statement is a transaction by itself is partially correct. While it's true that SQL can treat individual statements as implicit transactions, it is also possible to explicitly define transaction boundaries to group multiple statements.