Question

Which of the following statements represents a correctly structured transaction?

a.) begin; insert into album (album id, title, artist id) values (400, 'new album', 5); insert into playlist (playlist id, name) values (40, 'top 40'), (41, 'top 40'), (42, 'top 40'); insert into album (artist id, title, album id) values (1, 'my album', 348); commit;
b.) begin insert into album (album id, title, artist id) values (400, 'new album', 5) insert into playlist (playlist id, name) values (40, 'top 40'), (41, 'top 40'), (42, 'top 40') insert into album (artist id, title, album id) values (1, 'my album', 348) commit
c.) begin insert into album (album id, title, artist id) values (400, 'new album', 5); insert into playlist (playlist id, name) values (40, 'top 40'), (41, 'top 40'), (42, 'top 40'); insert into album (artist id, title, album id) values (1, 'my album', 348); commit;
d.) begin; commit; insert into album (album id, title, artist id) values (400, 'new album', 5); insert into playlist (playlist id, name) values (40, 'top 40'), (41, 'top 40'), (42, 'top 40'); insert into album (artist id, title, album id) values (1, 'my album', 348); commit;

Answer 1

The correct statement representing a properly structured transaction is option a, which uses a 'begin' statement to start the transaction, followed by several 'insert' statements separated by semicolons, ending with a 'commit;' to complete the transaction.

Step-by-step explanation:

The question asks to identify which of the given statements represents a correctly structured transaction in the context of SQL database operations. Looking at the provided choices, the correct answer is:

a.) begin; insert into album (album id, title, artist id) values (400, 'new album', 5); insert into playlist (playlist id, name) values (40, 'top 40'), (41, 'top 40'), (42, 'top 40'); insert into album (artist id, title, album id) values (1, 'my album', 348); commit;

This statement is correctly structured because it starts with a 'begin' statement, followed by a series of 'insert' statements, each separated by a semicolon, and ends with a 'commit;' statement. All of these form a single transaction block, ensuring that the inserts either all succeed or all fail together, maintaining database consistency.