Which of the following statements represents a correctly structured transaction? BEGIN UPDATE track set media_type_id = 1 where album_id = 3 DELETE FROM playlist WHERE playlist_id = 1 INSERT INTO genre (genre_id, name) VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock') COMMIT UPDATE track set media_type_id = 1 where album_id = 3; DELETE FROM playlist WHERE playlist_id = 1; INSERT INTO genre (genre_id, name) VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock'); COMMIT; BEGIN; UPDATE track set media_type_id = 1 where album_id = 3; DELETE FROM playlist WHERE playlist_id = 1; INSERT INTO genre (genre_id, name) VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock'); COMMIT; BEGIN; COMMIT; UPDATE track set media_type_id = 1 where album_id = 3; DELETE FROM playlist WHERE playlist_id = 1; INSERT INTO genre (genre_id, name) VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock');
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Which of the following statements represents a correctly structured transaction?
-
BEGIN
UPDATE track
set media_type_id = 1
where album_id = 3
DELETE FROM playlist
WHERE playlist_id = 1
INSERT INTO genre (genre_id, name)
VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock')
COMMIT -
UPDATE track
set media_type_id = 1
where album_id = 3;
DELETE FROM playlist
WHERE playlist_id = 1;
INSERT INTO genre (genre_id, name)
VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock');
COMMIT; -
BEGIN;
UPDATE track
set media_type_id = 1
where album_id = 3;
DELETE FROM playlist
WHERE playlist_id = 1;
INSERT INTO genre (genre_id, name)
VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock');
COMMIT; -
BEGIN;
COMMIT;
UPDATE track
set media_type_id = 1
where album_id = 3;
DELETE FROM playlist
WHERE playlist_id = 1;
INSERT INTO genre (genre_id, name)
VALUES (30, 'Funk' ),(31,'Classical'),(32,'Pop Rock');
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