Cs databases Study guides, Class notes & Summaries

Which result set requires a JOIN?
a.)
Showing all track names with genre names
b.)
Showing all track names with genre IDs
c.)
Showing all genre names with genre IDs
d.)
Showing all track names with both genre ID and track ID Which result set requires a JOIN?
a.)
Showing all invoice totals with both customer ID and invoice ID
b.)
Showing all customer names with customer IDs
c.)
Showing all invoice totals with customer last names
d.)
Showing all inv...

Identify the SQL command that uses an aggregate function that could be used to find the lowest total in the invoice table.
a.)
SELECT lowest(total) FROM invoice;
b.)
SELECT total(min) FROM invoice;
c.)
SELECT min total FROM invoice;
d.)
SELECT min(total) FROM invoice; Identify the SQL command that uses an aggregate function that could be used to find the average total in the invoice table.
a.)
SELECT avg(total) from invoice;
b.)
SELECT average total FROM in...

1.2 SINGLE TABLE CONSTRUCTION The following CREATE TABLE statement creates a table called 'company' that consists of the company_id as the primary key, the company_name, and the address. CREATE TABLE company( company_id INT PRIMARY KEY company_name VARCHAR (100), address VARCHAR (100) ); Identify the line of code that would generate an error in this CREATE TABLE statement.
a.)
2
b.)
4
c.)
1
d.)
3
The following CREATE TABLE statement creates a table called ...

Which of the following statement(s) would successfully delete the invoice_id 353 from the invoice table?
a.)
DELETE FROM invoice_line WHERE invoice_id = 353;
DELETE FROM invoice WHERE invoice_id = 353;
b.)
DELETE FROM invoice WHERE invoice_id = 353;
c.)
DELETE FROM invoice WHERE invoice_id = 353;
DELETE FROM invoice_line WHERE invoice_id = 353;
d.)
DELETE FROM invoice_line WHERE invoice_id = 353 Which of the following statement(s) would successfully delete the inv...

Which of the following queries will use a subquery to find the rows in the invoice table in the country USA that have the invoice total larger than the average of invoices of those in the country Canada?
a.)
SELECT * FROM invoice
WHERE total >
(SELECT AVG(total) FROM invoice
WHERE billing_country = 'Canada') AND billing_country = 'USA';
b.)
SELECT * FROM invoice
WHERE total >
(SELECT AVG(total) FROM invoice
WHERE billing_country = 'USA') AND billing_...

All invoices from USA will require a fee paid to an external organization for 10% of the total. Which of the following statements would query the sum of the total of the invoices in the country USA and calculate 10% of it?
a.)
SELECT AVG(total*.10) AS calculated_fee FROM invoice
WHERE billing_country = 'USA';
b.)
SELECT total(SUM)*.10 AS calculated_fee FROM invoice
WHERE billing_country = 'USA';
c.)
SELECT SUM(total)*.10 AS calculated_fee FROM invoice
WHERE bill...

1. Introduction to DBMS questions and answers latest 2023What is a DBMS A Database Management System is a software package designed to store and manage databases. What does a DBMS store? A very large, integrated collection of data. What does a DBMS model? A real-world enterprise. What information does a DBMS model? Entities (e.g., students, courses) Relationships (e.g., Madonna is taking CS564) • When would you store data in a DBMS instead of in operating syste...

Automotive chapter 5 questions and answers already passed Which of the following is NOT represented by the "3 Cs" abbreviation? Customer Which of the following is a typical label found on vehicles? All of the answers listed The ________________ is used by technicians to identify engine and emission control information for the vehicle. Vehicle Emission Control Information (VECI) label The ______________ certifies that the vehicle meets the Federal Motor Vehicle Safety, Bumper, and Theft Prev...

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