### Transcription and Explanation**Question 14:**- "How many records are created when you apply a Cartesian join (Cross join) to the invoice and invoice items table?"**Question 1:**- "The following diagram is a depiction of what type of join?" **Diagram Explanation:** - The diagram shows a Venn diagram with two overlapping circles labeled "table1" and "table2." The overlapping section is shaded. - This represents an "Inner Join," where only the overlapping data from both tables is included in the result.**Answer Choices for Question 1:**a. Inner Join b. Full outer join c. Left join d. Right join **Question 16:**- "Select which of the following statements are true regarding inner joins. (Select all that apply)"**Answer Choices for Question 16:**a. There is no limit to the number of tables you can join with an inner join. b. Performance will most likely worsen with the more joins you make. c. Inner joins retrieve all matching and nonmatching rows from a table. d. Inner joins are one of the most popular types of joins use. **Question 17:**- "Which of the following is true regarding Aliases? (Select all that apply.)"**Answer Choices for Question 17:**a. Aliases are often used to make column names more readable. b. SQL aliases are used to give a table, or a column in a table, a temporary name. c. An alias only exists for the duration of the query. **Question 18:**- "What is wrong with the following query?" **Query:** ```sql SELECT Customers.CustomerName, Orders.OrderID FROM LEFT JOIN ON Customers.CustomerID = Orders.CustomerID FROM Orders AND Customers ORDER BY CustomerName; ```**Question 19:**- "Write a query to find the total number of invoices for each customer along with the customer's full name, city, and email."**Question 20:**- "Write a query to retrieve the track name, album, artistID, and trackID for all the albums."

As the following image contains 7 questions, as per our guidelines i am currently giving the answer of the very first question. Cross joins can be defined as used to consolidate each column of one table with each row of another table, and return the Cartesian result of the arrangements of rows from the tables that are joined. It is is utilized to create a matched mix of each row of the primary table with each row of the subsequent table.SQL Query for cross joins for invoice and invoice item tables select invoice.InvoiceIdfrom invoicecross join invoice_items; If first table contains 4 rows and 3 columns and second table contains 3 rows and 2 columns then the cross joins result is 12 rows and 5 columns.

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14. How many records are created when you apply a Cartesian join (Cross join) to the invoice and invoice items table?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

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Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.

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