Sophia Intro To Relational Databases Unit 4 Milestone 4 Latest Questions And Answers

Sophia Intro To Relational Databases Unit 4 Milestone 4
Latest Questions And Answers

, lOMoAR cPSD| 7670600




1●

For this question, use the PostgreSQL database for this course.

Suppose you need to write a statement that shows the track name
and milliseconds from the track table and the playlist_id from the
playlist_track table. It should use an ON clause to specify that the
tables should be JOINed by their track_id columns.

Which of these statements matches those requirements?

LAUNCH DATABAS E




SELECT name, milliseconds, pla
FROM track

● JOIN playlist_track
ON (track.track_id = playlist_




SELECT name, milliseconds, pla
FROM track




JOIN playlist_track

, 20 /25
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UNIT 4 — MILESTONE 4ON track.track_id =
playlist_t




SELECT name, milliseconds, pla
FROM track
●
JOIN ON track.track_id = playl




SELECT name, milliseconds, pla
FROM track

● JOIN playlist_track
USING track.track_id = playlis




RATIONALE

The correct syntax for this query is as follows:



SELECT <columnlist>
FROM <table1>
JOIN <table2> ON <table1column> = <table2column>




No parentheses are used in any part of this statement. The JOIN
clause requires a table name. The statement should use ON, not
USING.

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UNIT 4 — MILESTONE 4
CONCEPT
→ JOIN ON to Link Tables

Report an issue with this question

2●

For this question, refer to the schema of the PostgreSQL database
for this course as needed.

Which of the following is a valid relationship in this database?


PK means primary key; FK means foreign key.



invoice table, customer_id column
(PK)


to
●

customer table, customer_id column
(FK)



customer table, customer_id column
(PK)


to


invoice table, customer_id column
(FK)