A large spreadsheet contains the following information about löčål Pestaurants. A sample por tion D A B Number of Average Аcсepts Restaurant Name Price Range Customer Rating Credit Cards Customer Ratings 182 3.5 false Joey Calzone's Pizzeria lo med 4.5 false 78th Street Bistro 41 Seaside Taqueria 214 4.5 true 3 med lo 202 4.0 false 4 Delicious Sub Shop II 5 Rustic Farm Tavern hi 116 4.5 true 6 ABC Downtown Diner med -1.0 true • In column B, the price range represents the typical cost of a meal, where "lo" indicates under $10, "med" indicates $11 to $30, and "hi" indicates over $30. • In column D, the average customer rating is set to -1.0 for restaurants that have no customer ratings. A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and whose average customer rating is at least 4.0. For a given row in the spreadsh suppose prcRange contains the price range as a string and avgRating contains the average customer rating as a decimal number. Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to false otherwise? A (avgRating 2 4.0) AND ((prcRange = "lo") AND (prcRange = "med")) (avgRating 2 4.0) AND ((prcRange = "lo") OR (prcRange = "med")) (avgRating 2 4.0) OR ((prcRange = "lo") AND (prcRange = "med")) D (avgRating 2 4.0) OR ((prcRange = "lo") OR (prcRange = "med"))

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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Question 47
A large spreadsheet contains the following information about local restaurants. A sample portion of the spreadsheet is shown below.
D
E
A
B
Number of
Average
Ассepts
Restaurant Name
Price Range
Customer Rating
Credit Cards
Customer Ratings
182
3.5
false
1
Joey Calzone's Pizzeria
lo
41
4.5
false
78th Street Bistro
med
Seaside Taqueria
214
4.5
true
3
med
lo
202
4.0
false
4
Delicious Sub Shop II
hi
116
4.5
true
5
Rustic Farm Tavern
6
ABC Downtown Diner
med
-1.0
true
• In column B, the price range represents the typical cost of a meal, where "lo" indicates under $10, "med" indicates $11 to $30, and "hi" indicates over $30.
• In column D, the average customer rating is set to -1.0 for restaurants that have no customer ratings.
A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and whose average customer rating is at least 4.0. For a given row in the spreadsheet,
suppose prcRange contains the price range as a string and avgRating contains the average customer rating as a decimal number.
Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to false otherwise?
A
(avgRating è 4.0) AND ((prcRange = "lo") AND (prcRange = "med"))
(avgRating 2 4.0) AND ((prcRange = "lo") OR (prcRange = "med"))
(avgRating 2 4.0) OR ((prcRange = "lo") AND (prcRange = "med"))
%3D
D
(avgRating 2 4.0) OR ((prcRange = "lo") OR (prcRange = "med"))
%3D
Transcribed Image Text:A large spreadsheet contains the following information about local restaurants. A sample portion of the spreadsheet is shown below. D E A B Number of Average Ассepts Restaurant Name Price Range Customer Rating Credit Cards Customer Ratings 182 3.5 false 1 Joey Calzone's Pizzeria lo 41 4.5 false 78th Street Bistro med Seaside Taqueria 214 4.5 true 3 med lo 202 4.0 false 4 Delicious Sub Shop II hi 116 4.5 true 5 Rustic Farm Tavern 6 ABC Downtown Diner med -1.0 true • In column B, the price range represents the typical cost of a meal, where "lo" indicates under $10, "med" indicates $11 to $30, and "hi" indicates over $30. • In column D, the average customer rating is set to -1.0 for restaurants that have no customer ratings. A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and whose average customer rating is at least 4.0. For a given row in the spreadsheet, suppose prcRange contains the price range as a string and avgRating contains the average customer rating as a decimal number. Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to false otherwise? A (avgRating è 4.0) AND ((prcRange = "lo") AND (prcRange = "med")) (avgRating 2 4.0) AND ((prcRange = "lo") OR (prcRange = "med")) (avgRating 2 4.0) OR ((prcRange = "lo") AND (prcRange = "med")) %3D D (avgRating 2 4.0) OR ((prcRange = "lo") OR (prcRange = "med")) %3D
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